I have written these 2 points in other posts, but because I think that are of great "balancing" importance, I decided to repeat them in a seperate post for others to put their suggestions/comments too in a seperate post:

Prophious wrote:
pve lvl +7 = 7 units
pve lvl +8 = 6 units
pve lvl +9 = 5 units
pve lvl +10 and above = 4 units

Pavlos wrote:at NM8+ make the ssb to be "used" regardless of victory or defeat!!!

all these with higher rewards for completing high NM lvls
That would make high NM more challenging and more rewarding!