First of all, i am writing this because i think i have a very good map idea, but i dont have the knowledge to make maps, but i would like to share my ideas there... Maybe some mapping pro or who has enough experience or knowledge can make the map, or just steal some ideas from it...
If i make this map, i would call it: "Sinking" or "Melting"
The map is about a gargantuan cargo-transport ship... But let me explain this little story...
So... Once upon a time, there was a huge cargo-transport, which was a proud new design made by humanity... On its first route the ship voyaged to the human-border sectors, to bring weapons, munition, vechiles and medicals for a colony constantly besieged by the alien threat... On the way back our transport carried ores and medical data about the aliens, and even an EGG, for further experiments... But something bad happened... Alien living ships ambushed the heavily guarded transport and its escort... The battle was long and bloody... The fighter contingent of the transport and all of the escort-gunboats were obliterated, and the alien crafts too... The transport suffered only mild damage... An explosion occured in the 1st cargohold and the crate which contained the egg was broken up... The egg started to spit aliens to the cargohold... The crew have spotted this problem too late... Nearly inside the more populated human sectors... The entire cargo hold was infested with grangers, small dretches, and more eggs... The ship havent got enough well-trained and well-equipped armed personel to erradicate the threat so the captain decieded... He ordered the crew to leave the ship via escape pods and then he triggered the self-destruction system and left with the last escape-pod too...
The job of the self-destruction system was to cause a critical malfunction in the cooling system of the ships nuclear reactor, but something gone wrong, again... It was a mistake in the ships design... The reactormeltdown hasnt occured just a small explosion, and the reactor was still in fuction, but spouting radiation and immense heat into the ship, melting through air-lock security doors, walls, cables... The ship was made of the best materieals so this melting happened very very slow...
The ships crew was rescued and the human leadership thought that the ship was destroyed... They were very embarrased when a few days later the ship was detected by the radar of a huge and populated mining colony on an icy world in the internal sectors... The transport was closing fast to the planet, and it seemed that it will collide with the planet... There were no battleship in the nearby just a company of marines, who had an exercise on the planet... They were selected to a suicide mission... To board the doomed vessel and change its course, to avoid populated space... Infested by the alien threat, irradiated and slowly melting and without escape pods remaining the ship was a deathtrap for the marines, but they had to do this duty for the survival of millions...
Ok... That was the story... Now I'll talk about my ideas about the map...
In my opinion this map would be BIG with 3 great and 1 small ship levels...
The first, starting level would be for both teams the lower levels... The marines would start in the hangar, after their boarding ship left... This is the only place to board the vessel, and this place is also the closest to the melting reactor... Maybe the walls have a hot, dim, reddish glow there... The cargohold 1. would be close to the hangar... There the objective for the humans would be to survive and to take and hold a security room which controls an elevator to the upper levels for a few minutes... The alien overmind and the eggs would be on a well defended and unreachable place for humans, because they main task is not to kill the aliens, but to reach the ships command bride alive and to alter the ships course... The aliens job would be to kill the humans for the ultimate control of the ship...
If the humans survied and held the room enough, an elevator door and few vents and stair doors would open, to let both teams to move their bases to the upper and yet safer level... But both teams have only a few minutes to move, after that the lower level doors are locked and the area is irradiated so all who left there should be dead... Alien and Human both...
The mid-levels would be the most free to build and fight... There would be living quarters and other things... If a team reaches this level of the ship, advances to level 2... In this level the humans would have to score kills or do some objective to unlock the third level: The command level awaits!
In this level the humans can now kill the alien threat and winning the map...
On the command level all teams would automatically reach stage 3, and after a short time, the mid.levels would be irradiated too, but maybe not locked allowing players to move there but to take damage...
In this area the humans must score kills to open security doors unlocking the command bridge and some other rooms... The objective for humans is to reach the nav-computers room and hold it for a short time...
After that the job is done, and it is time to care of survival... The half of the ship has molten, the 3/4 of the ship is heavily irradiated, no escape pods, and the hangar is now just a bubbling pool of molten metal... But there is one way to escape... The 4th cargo hold is still intact and it is not static built-in crago hold, so it can secede from the ship, serving as a makeshift escape pod... The only chance for both teams for survival... The doors to this cargohold is now would be open... After a few mins. the command level would be locked and irradiated too... All who left there is surely dead... The cargo-hold has splitten from the transport, and if both teams are still alive its time to take care of each other... Only one can survive...
So this is my idea... If you can see on this map, each teams must move their bases minimum 4 times if they want to suvive, so this map is not about camping... And it would be good, if all levels could be accessible from many ways...
I hope that someone liked my ideas and will make the map or something similar or just steals some ideas, because i dont have the knowledge to make maps and if i could it would be a bit complicated i think... So feel free to use it, to steal it

to shape it, because i think it is a good but a bit complicated idea... I hope one day we can play on it... But if we cant, it isnt a big problem...
Sry for my bad english, i hope you can understand what i meant and i also hope that you will enjoy it...