Map looks good. I really like the VIS blocking structure of it
Some stuff for the next betas...
Use "gamemode" "4" instead of "gametype" "4" to fix the warning while loading the map ingame.
Maybe you could add 1 or 2 more player spawns for each team, to make the spawns less predictable.
Btw. I'm not sure if low is a little bit too crowded, because it seems that this route is the shortest and fastest route from flag to flag. I think that should be tested ingame with a few players.
And screenshots
Red: Rotate texture.
Red: Small edges, it's below the main flag.
Red: This brush is a little bit too wide at the front
Blue: I'd add clip brushes here.
Red: The texture rotation is looking a little bit weird here. There're some more passages where the texture rotation is looking weird a little bit.
Blue: You need to move this red barrel down a little bit.
Green: I think it would be cool if players could go there. It's a little bit too small at the moment.
Red: This plank is almost flying
Maybe you can change the plateau a little bit.
Red: Rotate texture.
Green: I'd like to see clip brushes here, too.
Green: One more clip brush.
Red: I'd make the wood brush less thick here, that there're no edges at the endings.
Green: Misaligned texture.
Map is online @ [OTB] Beta!