Well I think it
could have continued story-wise as I think it would have moved to pretty much all MOTW episodes and you could make them forever, they just might not be that good but you could make them
However I really don't think it would have been practical. The fans were disappearing and even if Fox did agree to bring it back, I think the budget would probably have been greatly cut. And actually I really can't see that Fox would have renewed it.
Personally with no Mulder or Scully I'm glad it ended. And if the stories had to go on with Dogget and Reyes I would have liked the X-Files finished and then a spin-off featuring those two. I get the feeling the show would have been really bad and just hurt the X-Files reputation
So it maybe
could have continued, I don't think it
should have and I'm probably glad it
didn't 