Be creative ;)
Plenty of commenters mentioning that it's difficult to move around the map, because it takes a long time. That is true if you are moving around this map just like in any other Q3 map. The usual movement strategy won't work for this one. And that's the fun part.
You are supposed to use bunny hopping, inertia, rocket jumping, jump pads (carefully placed throughout the map), and jump pads combined with rocket jumping to develop and maintain high movement speeds throughout the map.
One commenter complained that it takes quite a bit to get to the flag tower and out of it. Not true! There is a platform with two jump pads pointed at each other, on each side of the red / blue base flag tower. If you jump on the pad while shooting yourself with a rocket launcher under your feet, you'd fly up almost up till the sky level, at which point it's simply a question of air control to fall on the teleport pad at the bottom of the flag tower. Takes 10 seconds. To get out of the tower, bunny hop off the bridge onto the water bay below. Use teleports and jump pads located along the wall to escape the base. Takes about 40-50 seconds.
My fastest runs on this map were capturing a flag and returning back to the base in about 2-3 minutes. I will probably post a video soon.
First, version v2 is much better, because it allows for an "easier" attack (two routes rather than one very very long and impossible to survive route). But even so, the flag is impossible to take. And even if you get to it... then what? You might have thought an easy escape would be going down... but the teleport right below the flag takes you.... back to the flag room. Water?...if you fall, you need to kill yourself or just wait to die with enemy fire. There is only one exit out of water and it is very far away... why not make the four corners an exit?. Anyway, unless you play against terrible enemies, it's impossible to make a capture in this map.
I didn't like either that the lighting wasn't symmetrical. Red base is clearer. Boxes: to high to climb, so only decoration. Some rooms lead to nowhere too. Better to have put the medikit there instead of next to the... MH. Also, why the automatic death when falling into the floor in the middle (under BFG or Quad)?
Now, the good bits. The map gave me a weird, instant feeling of being inside a Star Wars Death Star-kind of military base. The lava area was also very SW-ish. As a SW fan, that was a cool feeling. I enjoyed going around for a while. Architecture of the flag area and walls is really cool.
Overall, this might be a cool map in some weird mod (cannot think now which one). It could have been redesigned with gameplay in play, perhaps with extra platforms and several more levels rather than just two (or 1.5 as it is now) (more levels would have made this even more SW!!) (I see the railgun version did have more levels...). In any case, great effort and maybe give it another go!
Edited 2.63 hours after the original posting.