the solution is to limit the sigops.
No, that is no solution whatsoever. All that does is kill use-cases which require higher sigops (see certain multisig).
and develop a new priority fee formulae actually works that charges more for people that bloat and want to spend too often.
Each wallet can and has developed their own fee calculations.
things like hope and faith that pools will do the right thing are not enough, i actually laugh that the blockstream(core) devs actually removed code mechanisms and then went for banker economics 'just pay more'
Statements like these make you look like an idiot. Mining pools have primarily stopped using priority long before Bitcoin Core removed it from their code (which is also the reason for its removal).