theres actually a lot more that you can do that i didnt show there
obviously since its doable as a demo its doable as a wrangler engineer
once you get to the blu spawn as an engineer everything inside the spawn is obviously nobuild but the whole roof and that little open area behind the initial blu spawn is totally open to build stuff
once you get a tele up you can get virtually your whole team in their spawn
you can also do that sticky jump in reverse if youre on blu and wanna get up to the red spawn to stickycamp or something
its a really difficult jump though, as it requires 2 stickies an overheal and you to really curve your way around to the landing
ive only made that jump twice but im terrible at stickyjumping so yeah