Thank you for the comments... and sorry for my English

My initial intention with this BETA map is to improve the "game play" and not the design (at least if it is not affecting the game play).
Once the map achieve a good game play (if possible), I will spend some weeks to improve the details in the design (before releasing it as FINAL).
Why?, because (many people may agree with me) in Tremulous there are many really AWESOME and INCREDIBLE maps that have so much details that really makes you feel that you are somewhere else... But what happen??? Most of those maps really sucks at game play (sorry, but it is true)... If there are many players, the maps lags as hell or if there are few players is so bored because the game turns so slow... and usually, even people say "Wow! how cool is this map!", in less than 5 min. they are voting to change for something like A.T.C.S.
So personally I think is a shame that all those people that developed those maps took weeks or months to finish them and no one wants to play on them... so there is almost no way to improve their game play...
So the idea with this map (The Cage) is to start from the end... first focus on the game play, and then worry about the design details... what do you think?
amz181: yes, thank you... If this game do not fail in the game play, I will definitely do that...
As
Evoc said, I'm aware that symmetrical maps not always provide a balanced game... so I tried to create the necessary elements for each team so they can defend their base as balanced as possible... (also I'm planning to customize each base accordingly to users comments)
Could you explain why do you think this map is ALIEN-biased? (besides I usually play as alien?

)
You answer may really help me to achieve my goal with this map...
To complement
Evoc comment, from my point of view, this are the advantages in this map for each team. So, if any of you think I'm missing/wrong something please comment it:
ALIENS:ADVANTAGES:I think Goons will play an essential role in this map, because they can jump quickly from one floor to another, and they can attack from the 1st and 3rd floor.
Adv. Goons also can snipe from the 2nd floor entrance as well.
Tyrants can run freely on the "playground"
Wall climbing also may give Aliens some advantages in this map.
2nd and 1st entrances (mainly 1st floor entrance), are "trappers" and "acids" capable.
DISADVANTAGES:Tyrants can not reach 3rd floor inside base so quick (see timings below), and can not enter from 2nd and 3rd floor.
All OM common spots in Alien base, are exposed to NADES (groud level only).
3rd floor entrance is highly exposed to jet packers... It has not "trappers" spots (at least not so easy).
HUMANS:ADVANTAGES:In the case of humans, I think that jet packs will play an important role, because it gives you all the access to the 3rd floor from outside and for moving inside your base.
All humans can reach the 3rd floor quite fast using ladders (see timings below).
In the playground as from the 2nd floor entrance (1st and 3rd, partially), humans can fire without exposing to Goons or Tyrants.
Humans can fire from the 3rd floor to any in the playground.
RC may be better protected than OM.
Moving the base at the beginning to the 3rd floor, could be faster than for aliens.
From the 3rd floor, a human can jump in the middle orange squares without causing himself any harm.
DISADVANTAGES:Getting in/out through the 2nd floor entrance is very slow.
Battlesuits can not pass through 2nd floor and can not enter to Aliens 3rd. floor entrance.
Note: All this ADVANTAGES/DISADVANTAGES need to be tested in real combat games (for example, 5vs5) in order to know how much they weight in favor of a team. -------------------------------------------------------------------------------------------------------
In order to know "how fast" someone can response to an attack from the 3rd floor being at the 1st floor, I did some tests:
TIMING (approximately):

All humans (inc. w/jet pack): 5 sec

+

Dretch, Adv. Granger and Basilisk: 4 sec.

Marauder: 6 sec. *

Goon: 3 sec. *

+ Adv. Goon: 2 sec.

Tyrant: 10 sec. *

Granger: 12 sec.
*(depending of user skills, it may not be so easy)
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So please, test this map with other people... and if you think something in the map fails to provide a balanced game, please post it here... I will take it into consideration for sure, for the next BETA version, and I will give you credit for that.
Thank you all of you for your kind comments and I hope we can have some fun with this map
Please help me with this, so we can have more well balanced maps in Tremulous!