knowing the maps are essential at tremulous games, be it a public game or a scrim. the gameplay is very different when experienced people are playing, knowing locations, knowing what rooms to secure, where to attack from, good builders know what distances can turrrets, repeaters and reactors, eggs and boosters cover, they know funny places to settle down by. etc.
check the official server when some tough figures are around (you), building at crazy places, calling teammates to defend, pull back or rush, gathering squads and organising ambushes.
compare it to 'alone in the white' games (idn who's joke was this), where people have no clue about anything, bases and attacks are totally random, and you can choose to build a sane base while others are feeding or keep up with the rythm (=feeding as well) and leave your base... prone to a basi/blaster rape.
i think helping people to navigate more easily on maps would add to the gameplay quite much. not only for new people, but all of us.
efforts has been made in this matter, like the brand new naming of certain areas of maps and showing teammates positions, nicely covering half of the screen. i personally dont remember any name of any area right now, and i guess i never will (apart from "human base" and "alien base", which is quite paradox after a move). i dont want to lose more reputation than necessary, but i also dont know maps' names, i mix niveus with nexus, arachnid with karith, et cetera, however i've been playing them for more than 5 years, trough thousands of battles.
yesterday someone called for "RC moved to Hall, defend" on a well known map (i mix their names so idn which one was that), and it took me 5 minutes to find it, as there were dozens of areas on that map that i could consider "hall", not to mention that the area name code was totally different.
etcetcetc.
SO i think a very basic MINIMAP of some kind would be fruitful for trem 1.2, and as we talked about it on irc, it's not really complicated to make one.
oldschool things like Doom and stuff (or Diablo for younger folks) had this simple feature, saving us valuable time what would otherwise be spent wandering on the map being totally lost. if any of you ever played Wolfeinstein 3D, you should know what i'm talking about.
the heritage is simple:

theese kind of maps were spread in magazines for games that didnt have this feature, so you went to your friends to play with a torn out page of a pc mag and trying to rotate it to the correct actual position after all the nazis or demons were killed..
this kind of stuff makes life way more easy on new maps, without revealing enemy or buildable positions, what the helmet and alien radar is meant to complete.
i beleive that it would improve teamplay, especially if players could mark certain areas to draw attention.
this kind of thing is also already on its way on 1.2: voice commands... for several years.
i see voice commands too complicated, yet some kind of area marking would be very useful for "defend this" "attack from here", "gather here" or "avoid that" purposes.
for a start, i beleive that if the taunts would be marked, that would be just enough information to start with, what could be completed with teamchat.
that would also help if we dont even show the map, only the direction what others marked.
how would it work in trem...?

like this, maybe. you could achieve this view by pressing tab, and the usual stats could be at the top of this screen.
how complicated it should be?
i think it should be as minimal as possible.
at the start i've been thinking about showing stairs, doors, elevators, teleports and so on... but i think these are just confusing.
this layout was made with a very simple top view export from radiant and thats all. it doesnt have to zoom or flash or dance.
it could have many features ofc, like fog of war, showing directions outside the shown area, and so on, but we could try somthing like this for a start.
note that its not a radar like helmet or alien brain.
if any new map is made, the creator would provide this top view or it would be automatically captured somehow from the map file.
so, this is what i had in mind, feel free to comment, or to make experiments how this feature could be implemented (as someone already is).