I've never really gravitated towards the big guys either.
I find that the match itself is often dictated by the gimmick of " who is bigger " - those guys around that 7 foot number - Big Show, Khali, Nash, Andre, Kane - Undertaker is the exception at 6'10"
I find a lot of the matches slow and clumsy. And usually the feud is really just about one big guy, challenging another big guy, because they're both big guys. Then the match itself is usually a test of strength, power and slowly out muscling each other. Nothing draws me in.
I would say, there is a shift, the new ' giants ' aren't as big or as cumbersome as in the past. Big Cass, Luke Gallows and Baron Corbin are billed at approx 275-290 lbs - much lighter, and more athletic than in previous generations.
Luke Harper is a deceptive at 6'5" - Orton is 6'5" mind you.