I think the whole TNG cast has remained pretty positive. Someone said in another thread that they all seemed to genuinely like each other and enjoyed working together in the Star Trek universe, both on TV and on the big screen.
Thank you. Yes, I do think they got along better as a group than other series.
Wil Wheaton! And he gets extra-props for that having played one of the most hated characters of Star Trek ever.
I always liked his character & never knew it was a hated character until much, much later. I had the chance to hang out with Wil and very much enjoyed it.
I'll put another one in for De Kelley. Everything I've read from him about Trek was always very positive and he always came off as being incredibly grateful for every opportunity that Trek afforded him.
I've heard that about him, too.
What about Doohan? He lived and breathed Star Trek after TOS.
Jimmy Doohan would give the shirt off his back for someone in need. He was an amazing person who gave me much needed advice and encouragement during my brief foray into Hollywood. I miss him.
I'm surprised no one mentioned George Takei. He grilled me for an hour or so when Star Trek 5: Shat's Folly flopped. (It was the beginning of a friendship I am grateful to have had.)
Not only has George remained positive about Trek, but he has helped others keep it alive. He's even helped with fan productions.