That's true. Particularly with James and Paul occupying positions of authority, but I wouldn't be surprised if what I suggest comes to pass (i.e. I don't think I'm going to be wrong, go figure).
Go figure indeed. But honestly, who's going to stick up for draftees? Players want to get rid of the age limit, while owners want to make it more tight, but aside from that, how far will players go? Are owners going to say "Let's pay these young guys, who we complain about not being ready enough, more money"? Are players going to say "Let's raise the slot value by 30% for all rookies, I don't care if it results in a lower vet minimum salary"? I don't see it. As long as draftees don't have the scale lowered, they won't be hurt by the deal, so what's the point of helping?
On the face of it, I see the agents who represent the ~10 year Vet min guys (who I think are really going to be hurt by this) as well as the ownership being for higher rookie scale deals, particularly if they can attach it to another yearly bump in age limit.
Agents don't get that much from rookie deals. They only get to charge a 4% fee on what rookie deals make in excess of 80% of their slot. So if a players's slot is $1 million, and he gets the max of $1.2 million, the agents only gets to collect his fee based on the difference between $1.2 million and $800k (80% of the slot value). Whereas if the player is a veteran making more than the minimum, the agent gets 4% on everything. Agents also want to keep that money with the vets.
I've already argued that I don't think owners, who complain about draft picks not being NBA ready, won't rush to raise the rookie scale. They typically try to lower it.
I could see players getting rookies an extra guaranteed year, and if the scale takes up a smaller percentage, owners being okay with it, but that makes more sense to me than a spike in the scale proportionate to the cap increase.
EDIT: Also, I think vet min players will be just fine as long as the NBA still subsidizes teams for min salaries paid in excess of the 2-year minimum as they currently do.