I would echo these sentiments.
Watched it on a plane today. Thought it was fine. I actually really liked the leads, and loved seeing Linda Hamilton back in the films. Overall, I enjoyed it and would have been fine with continued adventures surrounding these characters.
That said, there are some problems with the film, and I think the big issue we're bumping up against is that the films are still basically recycling the same plot over and over and over, without ever actually getting anywhere. Terminator: Salvation tried to do things a bit differently, but seemed to try to be too "edgy."
I think they need to decide to do one of two things:
1. The Terminator franchise becomes an endless war throughout time as the machines and humanity continually send agents back through time to give each of their respective sides an edge in the war against each other. In this version, we embrace the idea that the real goal is more to provide humanity with a chance to survive, rather than to preserve a final victory or guarantee an end to the machine threat.
2. You do one final series of films that takes you through the hero's life, and then up through the Future War, culminating in total victory AND THEN YOU ARE DONE, DAMMIT.