Yeah, he's got that kind of potential with his handle. He's not great at creating separation yet, but he can get better, and at his position he doesnt need all that much to rise up over most guards defending him.
I think his handle is underrated because he had some bad turnovers so it gets brought up. I view them more as growing pains than a true weakness. Has some pretty nasty hesitation and change of pace stuff.
People will write some revisionist history on Dwill, but he was not viewed as very athletic coming into the NBA. Speed, separation, and athleticism were written as concerns on his draft reports. You can watch the only highlight video on Youtube of D-Will at Illinois and it has one dunk in it. He did not yam on people in college like he did at the NBA level. He also wasnt sending dudes into the ground with ridiculous cross-overs like he was at the NBA level either. Some players get to the NBA and seemingly gain athleticism and some don't. If you go back and watch D'Angelo Russell college highlights, he didnt look nearly as unathletic as he does now. I think this is partially the pace you choose to play at. D'Lo has developed his style to be ultra-slow and contact adverse where as Deron really embraced getting downhill and doing so fearlessly.
The good news is that Fino does display some of those more D-Will-esque characteristics in that he isnt scared of contact. He wasnt a good foul drawer in college, but I think it's something that is within reach givin his level of physically and size. Important to note D-Will also did not draw fouls at a good in rate in college either. I have no proven way to project this kind of athleticism reliably, but I dont think JHS is going to go the route of D'Lo. He probably wont play as athletic as D-Will did in his prime either.