While I love the idea, it doesn't seem like it fills the same niche as vote-sellers. As someone who utilized vote-sellers and even @bellyrub, I used them to give my posts initial exposure in hopes of reaching a wider audience on steemit.
I highly doubt any of the individuals on that menu have ever even thought about reading a post of mine, and I would be surprised if any of them have even seen a post of mine pop up on their feed or in a tag they frequent. I think this further silo's the individuals that post in tags and about topics that these folks don't frequent.
I don't mean any disrespect as I do love the idea, I just don't think it's fair to say that this can replace vote-selling in any meaningful capacity. I would love to be proved wrong though.
RE: Dear @freedom And Whales: Here's a SP Delegatee Menu To Solve The Vote Selling Problem