I don't see how half and half is gross; just because you don't like it, doesn't mean there aren't other people out there that want this, and even if it were the only pool being offered, you'd still have a way to do your 100% solo mining.
Funding working on something is the modern reality, as I have serious motivation issues with bitcoin related software development, and I'm sure you'd understand that a significant commission is a massive sweetener. If you feel like funding some improvement to solo pool be my guest, but there would have to be enough incentive, and something I'd be interested in working on.
The main thing that would stop me doing this is I don't really want to work with anyone else ever again long term. Short commissions have been things I've been happy doing, but I've still avoided doing any bitcoin related software work for years.
Hey man you do you. Your a legend in my book. You have way more to lose if something goes south in the new project. Right now your a legend to many bitcoin miners. Just hate to see that go away because something out of your hands by someone or something out of your control by another project. Your the man bro!!!!