What difference does this make? Well, that wasn't my initial problem, the problem was I was modeling them together with the intentions of being on small bases. It could also be an issue if I roll horribly on my reserves and too much comes in round two. Beastmaster units take up a ton of space on the tabletop with those big bases (unless you enjoy sitting in nice flamer/template patterns.... live fast live dangerously?). My old warpbeasts are on such tiny bases, I guess I was just blind.
There are advantages as well, but for now it be will be a trip to the store soon to get more bases.