I see more options than that.
We will eventually colonize a number of worlds. Good premise for good/numerous players and aliens, some of which do not have to be scifi oriented, and could gain more viewers that way.
And another of our many teams could be brought on board slowly, becoming the Alpha team over time . . . say with the understanding that SG-1 was about to take over a mission/undertaking that would take over all of their time, leaving little for exploration (more weapons should be needed).
Perhaps Daniel/Sam could remain with the new team - the scientist(s) to stay with the explorers. A new member could be added to SG-1 who either more military oriented, or another scientist.
And a series should always be looking for avenues to expand, gain new viewers, grow larger (if that is the execs goal). This is a good way. This series is unusual (in our view) in that the primary (Showtime) was about to put the stake in a series during high popularity, as opposed to when the viewers were getting bored.
I still think that the rumors were going around that the actors wanted out, and Showtime decided to obtain a firm statement/ something from the actors/producers that there was strong interest in going forward with supportive executive producers committed to writing and producing solid episodes. And they got it.
And I was wrong - Trek has four new captains, not just three: Scott Bakula (I know, hard to envision
) is the new captain of "Enterprise" (the early years, basically).
I've managed to write an epistle here. Sorry.