Not 100% sure, if I’ll stick with the armour design, but I like how the helmet has turned out anyway.
The current plan is to have at least two units for every species.
So far I got:
Pikes: Earth ponies with pikes, strictly defensive
Linebreakers: Earth ponies with claymores
Line Ponies: Unicorns with muskets
Pistoliers: Unicorns with tons of pistols (not sure about this one)
Royal Lacers: See above
Dragoons: Pegasi with either blunderbusses or multibarreled muskets
Plus some attilery (probably just gonna rip off the Warhammer Fantasy Empire) and some elite units/heroes (Wonderbolts for once).