None of the actors impressed me apart from Arnold and considering the talent this movie had, it all seems highly unlikely to happen. I did not buy Jai Courtney as the lead, Kyle Reese.
The bad storytelling did not help their cause either. The movie had no arc in my opinion. The flow and pace bumped into the rocks of bad direction. The moments of great action was succeeded by a screeching halt of a emotional moment and vice versa. The special effects were amazing to watch but it never was seamlessly integrated into the plot. Some movies can do a great job of explaining stories even to a new-to-the-franchise viewer and I got the feeling Genisys did not achieve that.
Coming to little positives, as I said before, Arnold was the best part of this movie. I found myself laughing and smiling every time he appeared on screen. It is a testament to how much he has improved as an actor even at his age.