I like these ideas, particularly the monks taking reduced AoE damage as it would allow them to stay in the fight and keep up their GL stacks (unless it's a heavy AoE). I'd be ok with SSD doing the same damage as long as the stun effect was replaced with paralysis, although I'd be equally ok with it having no extra effect and just doing bonus damage.
Kiluvian's idea would be great for this. A 20 second CD on jump with scaled damage without returning you to the original position. It'd be similar to a Warrior's charge in WoW (which was 15 second CD I believe with a short stun) but with a longer CD and a bit of damage. I don't think it'd be OP in PvP because if anyone played Warrior in WoW, you'd know that with a skilled ranged player, that 15 seconds seemed like an eternity.