Funny how i released my SA2B md2 and no one noticed it, when the quality of mine is better than this one. (except for super sonic xd, will be adding it soon doe)
But hey glad you're back with a more reworked version of your SA2 md2! I will be testing it and post my opinion here with a edit!
EDIT: Well I tested it already, and I gotta say it's not the best thing ever, but atleast you're putting effort in it, aswell as improving in animation. If I had to give you a tip in animation, try looking for animation references in SA2 videos or in the game itself, record videos capturing the necessary animations you want to replicate and put dedication and focus on it, I myself spent hours researching on the animations of a model and looked on every perspective and aspect of the model animations to know how every part of the movement was, with this method you'll end up with a pretty decent product, that's the way i learned animation, and that's the way a lot of animators have learned. Good luck on the process of updating it!