I just thought of something else. Better customizable Special Melees. One person could be Invisible, one could be Giant, etc. Or you could couple it with Stamina Mode, and decide wether it would be a Battle Royal or a Stock match. The possibilies are endless. Heck, I'll post an example of a custom match to show you folks what I mean.
Rule: Survival
Stamina Mode: On
Time Limit: 3:00
Speed: Lightning
P1: Giant, 4 Stock, 150 HP
P2: Tiny, 2 Stock, 200 HP
P3: Invisible, 3 Stock, 400 HP
P4: Metal, 5 Stock, 350 HP
See what I mean?