I've had such a wish many seasons ago after seeing out ATG and HOFs fall to bots and human teams drafting only MVPs. But I've never suggested it, because it's not really healthy for the game (points have been brought up by several people here so I won't repeat them) and I'm pretty sure even if no one objected to it, the devs wouldn't even implement it.
But reading this thread make me think:
How about we omit 5 potential players from the top draft choice of bots? If the default draft order of all teams are different, then just omitting it from the top pick itself should guarantee that no bots draft any 5 potential players in the first round. If there is a chance 2 or more bots to have the same top draft choice, then it's still okay, because the possibility of two bots having the same draft order is low, and if they do end up that way, the second choice might still not be a 5 potential player, and even if it is, it would solve the problems of teams winning and still getting a solid trainee.
IMO this should be the most balanced and natural way to reduce the chances of our high potential players going to bots.