Hey Freyja,
Nice to see it is still alive after all those years, think I worked on that map since 2014, crazy how time flies.
I have to say I really like the turn you've taken on point C, the feeling of progression is way better the way it is right now. Overall I think the map is pretty solid now, I would say your biggest issue right now is the pacing of the map and chokepoints positions.
Imo in A/D maps reds should never be able to push back into the blue zone, there are many ways to do it, being sure spawn points are close enough, areas with one side ways etc, where you want the players to fight is in the yellow zone and red zone during a good push, my vision of what make tf2 fun is when your cart is at one inch of the capture point and the whole red team is trying to prevent it to being captured, all the rest of the map is just here to lead to that point and is kinda useless, most of the fights should happen pretty close to the capture point.
Imo the level is good this way, progression feeling is great, overall structure of the map makes sense, your work should be on preventing the red team to push too far from their capture point, overall the points need better sentry nest, and it needs a good work on respawn times/distances.
I saw there are many respawn rooms, you could think how to cut somes and repurpose the good ones to switch them into forward respawns room once points are captured. I tried to do that on the first BLU respawn with the door opening on the side, imo it worked great and you should try to keep it that way since I feel blue had to walk too much to get to the fight area, RED usually can push too far away here it seems.
BTW that upper deck from last spawn to first CP is super good, it really adds to the progression of the map, I just think you should not be allowed to have such a big back path, make it a closed deck only for the sake of that progression feeling.
Overall some ideas :
I'm pretty happy with what you've done to fix the third CP which was by far the worst, and I really like the fact you kinda stick to my original dev mapping style ^^, hope those 45° weren't that hard to work with.
Good job, i'd love to play it if there are some playtests.