Playing this map, I found that it seems to have a lot of potential, though it could still use work.
There's no signs anywhere, and that's an issue, for one thing. Secondly, health and ammo are very scarce, though at the same time, having two full health and ammo crates in the cubby by the first point seems rather redundant.
The platform above the first point, as I'm sure you remember me testing, does not allow for engineers to build on it, since it's placed too high. Having at least a medium health kit would help encourage demomen and soldiers to use it, too, as it would hopefully at least begin to make up for health that would have been lost explosive jumping.
The winding side passage that... I think it was you that encouraged that engineer to build a teleporter there, right before I punched his teleporter to pieces. That passage definitely needs health, and if you want to encourage engineers, then add metal.
The platform that comes from RED spawn, the obnoxiously orange one, should have the crates by the sniper fence made breakable (or deleted), since they make speedy getaways for BLU soldiers and demomen who've jumped up onto the platform harder than they probably should be, and since they take away a handy building spot for engineers. It would also make sense to make a way for non-explosive non-triple jumping (can you triple jump up there?) classes to get up there, or to add guardrails on the section by the last point.
The blue ramp by CP one doesn't make sense in how it has no- that is to say, that it makes an acute angle with the wall at the bottom doesn't make sense, and it would seem logical to create a bit of flat ground at the bottom of it instead. I never honestly saw that ramp used, but that may just have been because of that unorthodox... low side type thing.
The cap time for the first CP seems rather short, though I didn't find that it impaired the fun of playing the map while we were playtesting, so I might not change it (yet) if I were you.
On a final note, the spawn rooms seemed rather bare, and might do with second resupply closets, if only for looks.
Pretty much all I have to say. Or at least that I can think how to.