For whatever my opinion is worth, blowers to me always belonged on Gassers or Fuel cars; on street cars especially they look too blingy ("Lookatme, lookatme!").
The less blingy a fast car is, the more impressive it is to me, and a 10.80 Rampage is plenty cool in its own right.
I would think if you underdrive a blower, a reasonable CR would be less of a problem, if you want to play with it later.