It was more that I needed to have an expositionary vessel to explain to the newly arrived vessels what was going on in the galaxy. Otherwise you'd end up wandering for who knows how long visiting empty planets and wondering where everyone was. If I'd known a Star Trek vessel was inbound I'd have elected to go with the USAF Daedalus complete with SG-1 aboard :)

Heck, I might even have asked Raidne if I could have Atlantis! *mwah hah hah hah hah* The thing would have been more of a mobile base for the others ships of the fleet to operate from.

Additionally, I do agree with you on the possibility of multiple star trek vessels. There's nothing wrong with two or more of those. There's also the aspect that the Star Trek ships might not even be from the same universe as demonstrated by our recently deceased Admiral.