It would only be 50% of current self voting if 2x the amount of stake started participating though. 25% if 4x did, and so on.. If you end up with 10x as much stake jumping in the pool as is currently voting, then pretty much everyone is getting 10% of the current rewards pool, and 90% is going to passive stake.
Don’t get me wrong.. I am not arguing against an investor class proposal, or even this one. I’m just saying it needs to be more thought out and calculated if it is going to have any chance of going anywhere.