I couldn't imagine a film w/out Arnold, but honestly T3 was so bad and T4 while not much better, wasn't so god awful IMHO, you know?
I can't watch T3 without spotting every single time they could have made a better choice with dialogue or story.
I've been wondering if/when they would just up and reboot things, but rebooting while keeping Arnold around confuses me.
Unless they do something I doubt they're going to do, and use CGI to de-age him. Such would be expensive though.
In an ideal world, the CGI to de-age would be accessible and let Arnold play the Terminator. I'd also, ideally, like to see Christian Bale back as John Connor, but I doubt that'll happen. The big chunk of change for talent is going in Arnold's pocket, and anyone else on the cast is going to be getting maybe 10% of what he makes. Likewise, Bale is an A-lister himself in his prime now, and wouldn't want to take a back seat to Arnold.
I dunno. I just want it to be good.
Oh, casting idea: Katee Sackhoff. As anything. Cause she rocks and could play it. LOL. A Terminator, a new Sarah Connor, Sarah Connor's mom, whatever.