Sorry for the late response.
Looks good. It's a very opened map though
Nice to see that you added the angle key to all player spawns. I would just add a few more player spawns, maybe 8 for each team instead of 8 for both teams. This would make the map and the gameplay more variable.
I think there're too many flags and bases in this map. Four flags and two bases should be the maximum without being too confusing. So I would do 1) one base and two flags for each team or 2) one base, one flag for each team and one mid flag for both teams. Newer players are already overtaxed with these two variants.
Otherwise it's like every new map. Very empty and lots of jumps. Somehow I miss good old maps like castle1, where tactic, recon and aiming was more important than jumping and flying from base to base.
Red: Misaligned. I would use an other wood texture instead of this short planks for the "ramps" and the bridges. The short planks doesn't look that realistic.
See the pic before. Misaligned, but I would use an other wood texture anyway.
Red: I don't like this hard edge. Looks ugly and should be removed.
Red: There's a small hole
Red: Misaligned. See pic one.
Red: Misaligned. Move the faces a little bit or choose an other wood texture, too.
Green: Add clip brushes here, that the window can't block you.
Note that there're lots of newer player around, which can't do a double jump and doesn't have a double jump script. Try to make your maps possible for those players, too. They don't need all jumps, ways, etc. but the most important ones should be possible for them.
Red: Make this brush a little bit bigger, that's easier to jump on the left brush.
Blue: Add a small box or something else where you can jump on here, that you don't need to do the other jump.
Red: A horrible looking edge, you need to fix.
The same like 2 pics before. Newer player don't need all jumps, but this way should be possible. The way on the opposite side is ok as an advantage for jumpers.
Yellow: Lower the brush a little bit, that it's possible to jump on it after standing on the box in front of the wall. Make sure, that the next step is remain possible.
Blue: Slope this wall, that you could use this way with less speed.
Red: Misaligned, see pic 1.
Blue: Add a clip brush here, that you can't hit the ladder from below.
Red: The transition from the ground to the ice looks strangely
Red: Fix this hole/edge.
Yellow: Rotate the texture in this corner (90°) like you did on the right side of this window.
Blue: Misalignment, see pic one.