Well, some more context around my background, I come from HL2 speedrunning which allows saving and loading at literally any point, to allow for more optimized runs. Surf, bhop, ahop, conc, and tricksurf allow teleporting back during timer running right now.
Thank you @zer0k_z for clarifying, I have no problem with that since it's very clear TP/Pro distinction. In KZ's case, it would also be allowed, but immediately mark it as a TP run, which is fine by me.
This leaves RJ/SJ as "not allowed". What I'm asking for is, can we try a mom_restart_zone command out, let mappers/zoners define whether or not a checkpoint ("jump" in these modes) allows it, and see how the jump community likes grinding a map with it? I'd hate for them to miss out on something like this (@cowboyana shows there's some interest at least in some method) and potentially handicap the modes for the sake of previous community consistency.
I'm certain we'd have significantly less people upset about adding it than we would surfers/bhoppers/concers/ahoppers upset about its removal.