did a more concrete example, using the card plot (orange numbers mean occupied by an earth totem)
generating 14 creatures with fractal is not difficult, could take 3 fractals with non-optimal conditions, so lets go with the 3 fractal req to be safe.
for 42
and ~27
you get 4x 8|8 creatures, 5x 4|4 creatures, 2x 2|2 creatures and 1x 6|6 creature, doing a net damage of 62 damage per turn. yeah, thats not out of line at all, you would probably be better off fractaling flesh recluses for the same cost, doing 6 damage per, 14 x 6 = 84 damage per turn.
so basically i dont mind totems stacking anymore, even rainbows dont seem like they would be that much of an issue (especially considering the subset which don't play well together due to them being active abilities), but i still think that the
one would be best suited to only function once per turn per creature, to avoid potential exploits.