I know that Rob Lowe has expressed regret about his decision to leave THE WEST WING...I wonder if Tina Louise regrets distancing herself from her successful series?
Lowe certainly had a high flying career as a movie star in the 1980's, prior to THE WEST WING, even if his post-departure television roles haven't worked out, but Louise is now and will forever likely be remembered only as Ginger. Whatever else she did in her career has disappeared into the mists of time and I doubt many people under the age of 70 could name any of her other credits without looking her up on Wikipedia or IMDB.
I don't know much about Dawn Wells' career other than what I've read in various obits since she passed, but I admire that she recognized the impact that GILLIGAN'S ISLAND would have on her career and embraced that. She knew that she'd forever be Mary Ann and leaned into it, rather than tried to fight it. It's a shame that residual rights weren't a thing in those days that she wasn't able to live a life of free of financial woes due to her work on GILLIGAN'S ISLAND.