Okay, blunt stuff ahead. I might sound like an asshole, but PLEASE bear with me.
Duora, your maps have pretty awesome themes. They look pretty, and seem creative. However, with this update, they don't play better. In fact, they're worse now. You have these maps with mazes, huge distances to cover and hundreds of 3d floors that create lag, dining tables, tall ass stairs to scale, and OIL SLIDER. I'll divide this into parts for ease of reading:
When making CTF maps, you have to take into account players as obstacles. You don't need to kill yourself over detailing things like the chairs in Silent Library (3d floor lag). I'll admit they look pretty damn awesome, but instead of focusing on detail first, LOOK AT THE LAYOUTS!
The bridge map reminded me of Shrine to Saku without the obstacles. You have this football stadium of a bridge to cover, with towers of babel that lead to... Thunder Bolt?
On the water map, you have a full scale armory in each base (which, by the way, are too plain), with a bunch of jump stairs to the flag, and the rest of the map is scarce on stuff. Uh oh.
The sewer map felt like a maze, and you have swimming (!) water on it. The main problem though, is how easy you have buster upgrades and other hard hitting weapons like Napalm Bomb easy to get.
Sky fortress map. "It looks so great." Then I realized I was falling into a pit I couldn't see on time because the 3d floor I was walking on covered it.
Race map. Oil Slider. Dining tables. How about no?
See, if someone gets Oil Slider (read: VERY likely), they pretty much win the game. All they need to do is get the flag, sip dining tables, and return to base. There's a reason one does not place taboo weapons (see the CTF Compo topic's first post) in CTF, or mass amounts of health/ammo together in ANY mode. One player goes by and gets everything.
I know I forgot one map, but listen. CTF maps like to be a LOT smaller than this. Players getting in the way already makes for obstacles. You can imagine how frustrating it would be to die right after crossing all of the bridge and getting the enemy flag.
I suggest you go see other packs, compare, and try again. Don't fear deleting maps entirely, either. I've had to do that a couple of times before I started to get the gist of what's a good size for a CTF map. I say you have some real potential. You just need to tone down the size of everything and distribute things nicely and in a balanced manner.
Good luck, pal. CTF can always have more love.