Love the mechanical breakdown, Doc, and I agree with you on his swing - there's a lot there to love, at least as a lefty.
Season line for our "overdrafted" shortstop:
.282/.355/.487/.842, 117K/49BB, 22 2B, 3 3B, 21 HR, 25/35 in steals, in full-season A-ball.
Not easy to be a 20 HR/ 20 2B/ 20 SB guy in the minors. If he's not the only one, he's close.
Watching Franklin's LH swing vs. his RH one, I would tell him to stop switch-hitting also. Just my personal opinion. He's spending a lot of time and energy trying to copy his LH swing from the right sight, to atrocious results (.524 OPS in 108 ABs). He couldn't be worse just taking everything from the left side, and he only took up switch-hitting as a junior in HS, I believe, probably because someone told him it would be valuable since he has "no power."
But he does have power, and I would spend his energy getting his LH swing to be all it can be. He doesn't need to limit downside. He's in a position where he can maximize upside. He OPS'ed .950+ as a left-handed bat with a .320 BA and a .5 batting eye, facing pitchers with 3 more years of experience than he has.
He's a left-handed genius. When a guy like Frank Frazetta had a stroke and had to figure out how to draw with his other hand - and succeeded brilliantly - you can be amazed. But unless Franklin has a stroke, I wouldn't let the switch-hitting thing go on much longer. I know he's been ridiculously unlucky from the RH side of the plate, numbers-wise...but with a swing like that I think he's making some of his own bad luck.
Let him get out of his own way with the switch-hitting, preferrably before he starts trying to hit breaking pitches in AA. He needs all the reps he can get from the side he's actually gonna use.
~G