I'm pretty concerned with how easy it is to capture in this gamemode. I really like the design of the bases where you have the ability to control the spawn, but because the map is purely linear they don't even have to hold the spawn just delay them a tiny bit and the flag carrier is already basically out of reach. I may be estimating this wrong in my head so without testing it I can't be sure but that's my gut intuition.
I'd personally like to see you mess with the map a bit more. Maybe like two seperate pits on the outside so you have to zig out there, and then one path in the center so you have to zag back and give the opponent a chance to catch you in the middle right when your team should be catching up to you.