I am not sure I am in favour of 2x4 categories, though I see the virtue of limiting to melee class.
But I do like the limit on classes.
So 4 categories (5vs5, 10vs10 both with and without gold limits)
A limit of 3 of one class (in 5vs) and 5 (10vs).
Hybrids count in both classes.
Classes are ranged, cavalry and melee.
If you got ability to throw, but bring no throwing weapons you count as only melee etc. etc.
Sounds fun?