Originally posted by strict31
There's a fourth point, D.S.:
When Nimoy showed up in TNG, the show wasn't hanging on to its existence by its fingernails. It wasn't fighting for its life; it was playing around with story ideas.
More accurately, TNG wasn't bound by the strictures of fickle network executives, as Enterprise is, and the last couple/few seasons of Voyager were. I doubt that Enterprise would be in such "dire straits" had she been a syndicated show like TNG and DS9.
Davy Jones
"Frightened? My dear, you are looking at a man who has laughed in the face of death, sneered at doom, and chuckled at catastrophe! I was petrified."
-- The Wizard of Oz