Yeh, there is no negative. It is just a one time teleport.
You are completely immortal with a kill switch for when you want to die but the kill switch only has a 75% chance of working.
I personally like the idea of the parkour being "natural" so that it doesn't feel like block to block but more like you are truly trying to get somewhere. I like the map and can't wait to play.
8/10
Definitely not #2 because that would quickly get lost on rebirth.
Neither would I want 1 million mana as I would basically of have beaten the game and then it loses it's fun.
I would probably take the magma farm (If automatic) as it is a constant stream of money.
Instead of having to destroy the entire sign to change it, being able to right click it or something would be really useful and would make the server stand out. It would also be very useful.
I have heard this being discussed in the parkour server and that someone would make a poll to prove what one was the best but I don't think it has ever been created so here it is.