I've seen a few people who want male viera min/max height to be just a little bit shorter than the females, nothing extreme or drastic. Since the female viera are quite tall, even if the males are a bit shorter than the females, they would still be tall. I don't really have a problem with it either way.
On a side note, I have done a height comparison of my own that I posted in my thread, but I'll post it here too. They look to be around the same height.

(Keep in mind the female viera is wearing high heels)
When I was doing this comparison, I tried to keep their head size the same (I figure their heads will be relatively the same size in the game, so that's the way I measured it). That's what the red outline is showing.
I did a second height comparison privately and found that max height male viera's head (the very top of their head) goes up to max height female roegadyn's collarbone. Minimum height male viera goes up to max height female roegadyn's chest.
None of this is 100% accurate obviously, just an estimate.