in the end it will come down to profit made on sfc. if activision that sfc3 has made a significant return than the budget it was given, and didn't just break even, they might think another venture worthwhile.
then the descision would be to make it a big venture...go all out...big budget? big game...something more to the online persistent universe? sfc certainly has the tactical side of it, just needs a few more niches, a properly coded persistent universe, and viola...but anything persistent means big budget and long time development from the get go.
i think we can be happy, along with Taldren that their game exceeded its original expectation, in that when sfc1 came out, truly as much as i can remember, it really broke the curse, it was a good star trek game, and well received by fans and critics alike. and it spawned...1, 2, 3 other products. I think they can be happy with that. whether or not they are content to end it there is another story. I would suspect that if the person driving taldren still has a dream he doesn't think he's accomplished, he'll ago again, provided the means are there.
at
www.darkspace.net the programmer for the MMOG Darkspace, cant remember his name, brilliantly guy. did darkspace for a couple years before he secured the publisher he has now. it was persistent from the get go, had his servers running it, but that was within his means.
i hope for an sfc4, or another addition to the series, but it would have to be drastically different from just a story based mission campagne. it would need more involvement, and that comes through multiplayer...
i think taldren really tried with the d3, and with the resources they had, (time, budget) they almost pulled it off to be perfect by a fun factor standard.
so maybe bill gates is a trek fan and he likes sfc series, and he wants another game, he'll call taldren, taldren will say, well ya know we kinda tired of sfc now, bill makes his offer, they say....dad!