Velocity is overrated to big time hitters. It just goes out faster and longer. Any pitcher grooving a 90 mph plus will get fenced. The key is movement and deception. Maybe he could develop a knuckle ball also with those fingers so long.
Control
Movement on the pitch
Velocity.
In that order.
Note that velocity comes last.
Velocity is overrated. You need control (location) or you’re not going anywhere. If you can’t throw strikes, you can’t pitch.
A good fastball helps, but if you can get people out with the other pitches (”junk”0, you can do well. Orlando Hernandez wasn’t especially fast, but he had a funky motion and effective control.