To start, I love this mod, I've been waiting for an actually good JoJo mod since probably forever. The only other half-decent ones we've had were Hol Horse and Kira (kinda). But now both DIO and Jotaro have finally been given the quality they deserve. The tandem mechanic is amazing, and both characters play very nicely; however, I do have two suggestions regarding their time stop that I think could be a bit better.

Firstly, I think it would be better if you were allowed to finish whatever move you're performing (including taunts) before time resumes, essentially allowing you to extend the length of your time stop by the duration of that move. This would help make time stop smoother to use, rather than just abruptly ending your attack, which feels a bit janky at the moment. Also, both HFTF and ASBR do this, which these mods seem heavily inspired by, so I think it would be an appropriate feature here as well.

Another thing, to provide more visual clarity, would be showing the bar drain during stopped time to indicate how long you have before time resumes. Currently, there's no indicator to show you how much time you have left at all, so this would be a very handy feature. Also, this is another thing that both HFTF and ASBR do, so I don't see why it wouldn't be appropriate here.

Aside from the absence of these two features, I think both DIO and Jotaro are amazing mods, and you can definitely tell the amount of work that's been put into them. Thanks for reading, and I hope these are possible within the realm of RoA modding. By the way, I would have posted this as a comment had there not been a 1,000-character limit, so my bad.