Yeah, that's the problem, JT is going to be the starting catcher and play 120+ games a year at that spot.
So IF, and that depends on his AAA year, O'Hoppe turns out to be a solid hitter, you want to get his bat in the lineup.
They moved Coste around when he was the backup catcher.
We're not talking about playing full-time in LF, but maybe 20-30 games as a RH bat in a part-time platoon, or being able to sub in as a late inning PH/replacement.
This both provide more value on the bench, and allows them to get him more PA.
Of course, if he goes to Lehigh and puts up a .720 OPS at 22 years old, he'll repeat at 23 and remain a catcher only.