The jetpack won't be much, not as extensive as simply jetpacks, just one item, maybe an upgrade to the liquipack, maybe a separate item. And powered by water and rf. Anyway it will be togglable. As for waterguns, that sounds like a really cool idea. Maybe have a harmless version, and one of those water jet cutters, that will be more harmful? Anyway great ideas thanks for the feedback.
Yah, I didn't expect jetpack to be that complex, or powerful. Actually, I was kinda picturing it like in Mario Sunshine than an actual jetpack. I'd prefer see it as a Liquipack upgrade rather than new item; then it could drain water from tanks and upgrade adds new meter for rf. I'd expect it would be not too fast and probably drain water at a rather quick rate, so best for short bursts than flying around the world. Speaking of that, may want keybind to activate (like sprint/sneak) or toggle so you don't waste it trying to jump; I think I'd prefer the first one more since I hate having to cycle toggles.
Yah, a harmless and harmful version seem right. Like a basic one that deals no damage but can knockback; maybe even stronger one with great knockback but no damage. Then there could be a high pressure one that damages. Maybe you could even do something like a hot water one to "burn" (more damage) by having water and lava. Or even just a lava gun. And I'd assume all of these would be held weapons that would draw from liquipack, maybe with a small internal storage of their own.