I liked the ridges, it gave them a more menacing look, and gave a slight distinctions between the Vulcans and the Romulans, without looking radically different.
Nah, I *never* liked the "ridged" Romulans... It really detracts from the point that Vulcans and Romulans are the *same* species. Plus it looks stupid.
But then again, both Vulcans and Rumulans were botched in TNG and later series. (Vulcan makeup plus bowl cut, Rumulan ridges plus bowl cut)