OH MY, A THREAD WHERE I TRULY BELONG!
I too despise the walljumping mechanic, as it is incredibly hard to use, and under explained. I too found out about the long jump through online tutorials, and I too wish that the map design was way better. And until the option to start up a dedicated to server to find and practice jumps, walljumping will remain kind of niche and weird.
I heard that walljumping was added after Chapel and stuff were completed, so it would explain the lackluster jumps. However, due to Dome’s new factor, it is probably much more jump friendly. I really hope that wall jumping gets more love, it has so much potential.
EDIT: Fortress Forever comes to mind when I think of more mobility, as it has simple but effective mobility that could be implemented. The pseudo double jump which actually is just a jump followed by another jump on a raised platform gives a nice boost, and I think that would fit perfectly.
Also, Warface is another game that had this element of teamwork with mobility, such as get in a corner, signal a teammate, then you can both jump over a wall (youtube it, sorry for bad explanation.) If the Devs really wanna push teamwork, shortcuts that involve partners would make for great flanks, and EXCELLENT teamwork. I think Train, objective A (C4 plant), the door that attackers can close, would be cool if defenders could also get over, but they would need to use a Warface-esque crouch and signal, then push them over kind of thing.