Yes, in general an improvement in LA would translate to more power in theory, but... LA is only 1 part of the barrel rate. Barrell rate also incLudes EV, and his avg EV is still 3rd percentile, which is probably strongly incluenced by his bottom 10 percentile swing speed. So, his LA is actualky pretty ok, butvhis barrel rate is garbage becasue he swings woth pool.noodle intent.
He can square up and get a good laucnch angle 35% of the time all he wants (which is where he is now, and its above average) but until more of those swings are swung with more damage intent ... yeah 10 HRs over the season is probably even reaching.
I don't even think his problem is getting his A swing off, the problem is his A swing is a regular players B or C swing.
The question going forward is how much swing speed he can coached and/or bulked into without detrimentally impacting other underlying metrics.