It will reduce the reward pool, because it will give everyone the free path to automatically get their revenue from it based on SP. Which will probably be more than those users selling their votes/delegating to bid-bots.
Now, I'm not saying that this is wrong - I'm actually in favour of implementing a system that separates investors, wanting to earn ROI on their investment automatically and users wanting to participate in the voting system.
But the implementation might need a bit more thinking.
So much talk of getting 100% rewards - has anybody ever tried getting over 100% of the blockchain rewards passively? The blockchain currently yields about 22% APR for an upvote, author-rewards are about 16%, the inflation rate is around 8.5%. Just look at isteemd.com for a sample.
(@therealwolf should treat that as a rhetorical question!)
There may be an argument that some investor-status SP could yield the inflation rate (or maybe half), but why would someone bother when they can earn more through existing passive means?