Ok, let's do some math...
PG (48) - Garland (20), Sexton (10), Washington (18)
SG (48) - Levert (18), Sexton (20), Garland (10)
SF (48) - Lauri (17), Levert (12), Okoro/Wade/Stevens/Cedi (19)
PF (48) - Mobley (20), Lauri (8), Love (20)
C (48) - Jarrett Allen (30), Mobley (10), Lauri (5), Moses (3)
This hypothetical has *no one* playing more than 30mpg (this past year, Mobley played 34mpg, DG played 36mpg, JA played 32mpg, Lauri played 31mpg, Isaac played 30mpg and Caris played 30mpg with Cleveland).
These numbers break out to:
Evan 30
Darius 30
JA 30
Lauri 30
Sexton 30
Levert 30
Love 20
4 guys (Okoro/Cedi/Wade/Stevens) SHARING 19
Moses/backup C 3
Just so a backup rookie can get 18mpg...
Everyone is at, or less than (some drastically less than), their minutes last year.
Why assume Sexton gets 30 every night? Some nights it might be 22-28 range, some it might be 26-32 range.
Same with LeVert.
For Love, this was his healthiest year in a long while. Is that likely to continue? Is he a guaranteed 20mpg guy next year? Some games it could be 14, some 22.
Why factor Cedi, Wade, Moses, or Okoro in at all? They will/may play but they're not guys that just get automatic minutes next year fro simply being on the roster. In tight games, they may play little. In blowouts, they may play more.
As we know, injuries will happen. Rets games will happen. Some Covid games will probably happen as well.
You can do the same math with the bigs. You can do the same math with drafting a traditional SF because that will push some LeVert minutes back to SG only and some Markannen minutes back to PF.
Draft and acquire talented players and while some consistency in a 9 or 10 man rotation is necessary, no one but Garland, Mobley, and Allen are guaranteed huge minutes every game.
You're either way overthinking this or giving too much consideration to anyone not named Garland/Mobley/Allen in terms of what position we should or should not draft.
The only position that there is a strong argument for not drafting at 14 is C or traditional PF. But backup PG, combo guard, traditional SG, wing, big wing, and. even SF/small ball PF should all be on the table if the are the BPA and have translatable NBA skills like good athleticism, high effort, especially + shotmaking/playmaking