I'll throw in my two cents. I saw the Chicago Wicked about three weeks ago and didn't think Kristoffer seemed "gay" at all. I thought he seemed appropriately cavalier and devil-may-care, and made a good transition to the more "mature" Fiyero in Act II.
Nope. No "gayness" that I could detect.
As for Rondi Reed....she was the sole person in the show who I thought was a bit lackluster. Carole Shelley was so commanding in that role, Rondi couldn't hold a candle to her. The night I saw her, she seemed...I dunno...distracted (maybe it was Fiyero's "gayness" that was pulling her focus). I wanted her to be more sinister, but she seemed oddly detached and not terribly invested in what was happening around her. Maybe she was having an off night.
"Word of advice: Be who you are, wear what you want---just learn how to run real fast." Marc, UGLY BETTY