Minor thing that might be worth fixing to stop abuse: your red respawn signs are solid, worth dealing with just in case anyone decides to do some spawncamping.
I really enjoy this map, but I think there are still improvements to be made. What I see as the biggest issue with the map currently, is how easy it is for blu to cap B. The main cause of this is the fact that there isn't a single good spot to hold on B. Not only do you have to deal with people coming from Blu spawn, who already have an option to flank B from the far right route with the full ammo pack, people coming from D with the options of coming out from either side behind the point, and an A/B flank which lets you come to the point, get behind the point and get to the balcony behind the point, but you also have entrances into the water from the spawn side, A, and D, with exits from the water, again behind the point and on both sides.
With this, there is just no viable place to hold. Any place close to the point is flankable from so many places, you can't set up at all, and any places that feel holdable, such as the balcony over the point, is too far away from the point to stop it from being capped.
My personal recommendations on how to make the point holderable, would be to firstly remove the water. The water thing is already in D, and it just facilitates too many flanks on this point. I would give the A/B route only one exit, the one by the point. I would reduce the options coming from D, I guess to only the balcony side.
Super good pictures to show this.