Simply won't care.
It can end tomorrow and I'd not weep about it... I'll have films on DVD if I wanna watch them. I've got figures, and I will still customize to make my own...
Beyond that I'd just enjoy the hobby as I always have. Collecting's just an area that fills a small void. Customizing's always been more fun to me, and more satisfying and it won't end with the line's end.
If there's a TV series, I just hope it's good... If there's new movies, well I hope they're good too. None of it really bothers me though... There's things I'd like to see but if not I'll still be "collecting" just in my own way.
And at least then I'll know what I HAVE to make instead of guessing only to have Hasbro create it sometime down the road!
I know I'd spend a lot less time in stores, and have a bit more $ on me than I currently do. That's not really bother me at all.