It just doesn't feel right to have a cube with "Vanilla" in the name but no Muraganda Petroglpyhs. If vanilla creatures aren't good enough, then tokens will have to support it.

In:
White Suns = cats and tokens, gives tribal an extension.
Gavony Township = a bit of a pet land, but it was absolutely cracked in limited.
Growing Ranks = This will need some more 3/3 and 4/4 token support to make sense. Call of the Herd also going in, should help.

Out:
Sigiled Paladin, Deft Duelist, Stormfront Pegasus = white has too many hard-to-cast 2's. All of these could come back in if the cube's power level goes down.
Aegis Turtle: Wasn't playing this even in the Doran deck, not worth a 4th color.
Venomous Changeling: Can come back in if we get a vampire/zombie tribal subtheme, right now doesn't do much.