I watched this after watching SGU... And this is very different. SGU is great, and realistic. I think that the use of accents, costumes and such like things reduce the verisimilitude, at least for me. In some way, this is not really a feature film, but merely a long episode. I mean, I think it could have worked even better like that.
Overlong and disappointing time travel story that can't bring anything new on the table except giving actors different roles to play and giving fans one final trip through the gate. The ensemble do their best and are fun to see as usual but there is not enough inventiveness with the script as this should have been better.