I would argue that Ruzicka has shown a lot of talent.
The way I look at him is like this:
He has all the nice tools, and even comes with a really shiny toolbox. Size, speed, skill, skating ability, vision, and even hockey IQ. He literally has it all. However, the tool that is "compete" is actually a lock, and it has basically locked the toolbox. Darryl Sutter couldn't unlock him. Huska hasn't been able to either. Playing him in the top 6 with a lot of rope led to a fantastic start, but then somehow that lock had a timer on it and it snapped shut again. Playing him in the bottom 6 didn't unlock it. Scratching him didn't unlock it.
If Arizona manages to unlock it, you got yourselves a hell of a player for free. If not, you will just have another frustrating piece of the puzzle that doesn't quite fit anywhere. I will make this prediction - being a waiver claim and jumping to a new team should probably unlock him a little bit, and I bet he starts off well. Up to your coach to make sure that the lock doesn't close again.
I really hope he makes me eat crow. I was rooting for the kid, and I still will, even if it is no longer with team I cheer for. It isn't like there isn't any hope for him. Some players never get that 'drive', even at this level. Some players find it, and the ones that don't usually just squander the rest of their talents and find themselves in a different league eventually. Hopefully he finds it.