Actually I don't mind that the series did not wrap up all the lose ends. It lets me ponder the future outcomes. Maybe in three years someone will reboot the franchise. It maybe that SG needs a little time away from the audience. With this ending there are unlimited ways to reboot SGU in either a TV series or Major Movie. Kind of fitting if it went back to the theatres as it would be full circle from the Big Screen to the small screen and back again.
I've been pretty critical of the show since the beginning, but it has really picked up the last five episodes or so. The finale was even kind of sad. It's disappointing we won't ever find out what happened to them. At least they gave it a good ending.
I've watched (and liked - but not loved, lol) it from the beginning, and have to agree - the last few episodes were the best.
Perhaps this, combined with the way they ended it, means it may be ressurected at some point. Wishful thinking, but that would depend on the reception of the last few episodes - the possibility remains. They decided it was to be cancelled months before these 'better' episdoes, so who knows? They may change their mind after seeing ratings/dvd sales.