Ronning was a lot more engaged last year all over the ice. We'll see if he can do it at NHL speeds. Last year was a watered-down AHL.
Gettinger started weak, finished strong. If he can continue to focus on working the corners and front of the net, he may be able to carve out an NHL role. I doubt it.
Huska was...fine? He was never particularly good, but wasn't bad, and kept Hartford in games. He didn't really take a step forward, though. Or, not a big one. Hard to see him here long term unless he really dramatically improves.
I'd be surprised if any of the three are here at this time next year.