So did the occupants of the ISS get any special powers (ala Fantastic Four)? 
Nope, the sideeffect of the Radiation from that Nexus thing was a slow death.
Only Kirk, Picard and Soran could have survived that.

I've seen all ST movies by now, and only three are worth mentioning.
The Wrath of Khan was the best one, The Voyage Home ( Yeas, it is an enjoyable Movie

) and the Undiscovered Country ( because it ended ST - in a halfway decent fashion ).
I didn't like Generations much, the entire Data goes Emo plot was poorly executed. The story with the Nexus didn't make any sense. In all the TNG Movies the ( main ) characters are different then in the show. Picard for instance, he was never a "shoot those bastards" type, he always seemed quite, thoughtfull and he seemed to try to solve conflicts always with diplomacy, at least from what i've seen in the show ( i have to admit that i haven't seen all episodes yet ).
This was totally reversed in the Movies.
The new ST movie was entertaining, at least for people who don't know anything about the ST franchise.
The effects are totally overdone, some of the characters too ( they ****ed up Scotty! ), Kirk was a bit too wild, only Spock was Spock (imo).
The story has more plotholes then a swiss cheese (
dear ST scriptwriters: don't frak with Red Matter - it makes holes in your plot! )
And worst of all: They killed the entire TNG/ DS9 Story!
( Voyager is in the same Category like Galactica 1980 - it doesn't exist )What would have killed ST totally for me, if they had announced a Movie based on Voyager.