but we could imagine a higher reward in exp for full clears at the end ?...you know is quite a challenge sometimes to manage a full clear.

Like a 20 % exp. or something alike on top of the already given incentive ?

just an idea, didnt give much thoughts about it (could be the same in the PoTD) full clear at the end of the 10 floors = 30% more exp... well you get the idea