Both Red's final spawn doors open for me on blu, though the visualiser prevents me actually getting in.
There's no supply cabinet downstairs in the final redspawn, which seems odd, but whatever.
You need to jump to get up the backs of the dinosaurs, which is sad. Running on the backs of the dinosaurs is fun, and shouldnt be made more tricky, i think.
Whilst i agree that detailing will make it or break it, Blu's final point is kind of a dissapointment after seeing red's. It feels kinda random and arbitrary, in some random corridor to the REAL point. Like you left a Capture Point in a spare corridor and forgot to delete it. Detailing will help, but it still seems distinctly anticlimatic.