My stupid little OCD rant time!
Probably really old news to you as I've noticed, but the time it takes for players to get from the spawn to the point is really insane, I tested it myself, and it took me 5 seconds max to get to this point by playing with just the scout. Soldiers and Demomen could wipe the entire control point clean in literally a few shots flat, especially if it's a tight with other players.
You probably haven't gotten around to this yet, but just want to add it in. The spawn rooms are really under detailed, and I can see what you were going for as to making them look like the kitchens to the cafe's outside them. So I'd probably add in some sorta stoves, ovens, and other industrial kitchen styled items. Maybe add a window in the back of it to still give it that, "We've got a secret base in here" idea.
Once again, probably still a WiP, but I feel like you're skybox can be worked with a bit, give it more detail, or more of a beach theme to it. More beach chairs, some shacks and life guard towers, towels out on the beach, and so on.