I've been experimenting with the mini's and I really do only feel that they provide something different for the Giants . The dramatic size difference actually changes the movements strategies of eye brawl etc. and gives you a different way to play as the classic Giants.
A lot of people say the mini's are faster but it just looks that way coz they're tiny and look like they cover more ground ( I've been racing them lol ) .
I love how the Mini's look , but The ones based off cores barely have a smaller sprite in game and it really doesn't change their Play at all. The only really difference could be that being slightly smaller means you can't be hit by as many attacks, but then some of your attacks are smaller too so you probly can't hit as many enemies so it balances out.
Tigger happy to trigger snappy comparison is the worst I think. Basically the same.
They really should've just left most of these guys as "pets" , just make them Deal a bit more damage them a magic item and maybe give them some upgrades, but making them playable characters really seems like a bit of a waste for the cores. I think they were more unique charscters as pets.
In conclusion ... Just gimme swarm , hot head, crusher and bouncer lol