It is an option people have not explored. I would not rule it out though. I have THOUGHT about doing it with my Utopia team a few times. Just grabbing up a bunch of allstars at around 18/19 and team training them for 8 seasons.
I sort of did.
I used to almost never do single position training until a season or 2 after making it to D2. It was mostly a combination of 3 position training (
PG/SG/SF or
SF/PF/C), team training (like passing or rebounding or my favorite... OUTSIDE SHOOTING FOR TEAM!), and a little bit of 2 position training sometimes.
But BB was kind of different back then. I remember my leader scorer my first season in D2 was a $13k guard... and he came off the bench! Arguably my 2nd best player was a TL pickup with 15 blocking but only 7 inside shot. (Wish that guy could've lasted til after they made all the changes to blocking).