...we had plenty of TNG episodes featuring Romulans and no limpy heads...
Totally untrue.
Only ONCE did we see a Romulan without the ridges in TNG.
Then what about the lumpy headed Romulans in Enterprise? How do they fit in.
~String
You tell me. (And specify an episode or two as a reminder, while you're at it, will you?)
As I said, there are any number of explanations.
What are you trying to counter? The fact I said we've seen both?
