I was thinking about Grizzly just yesterday. After Ursa Major was released, Grizzly was obviously not going to be far behind - any excuse to reuse a body! Yet here we are, 4 years later, and he's nowhere to be found. Make him already, Hasbro!
Classic version first and foremost. I wouldn't be opposed to the Thunderbolts version either cause I enjoyed that little run, but definitely not the one they should focus on.