I feel like that would be more easily gameable. SearXNG relies on results from other engines and there's this one distributed one that's apparently basically useless for most searches. Do with that info what you will. ~Nai
My wish would be for a free search engine, not a meta search engine, but it doesn't seem like there is much interest for that, mainly because it highly demanding in terms of complexity, but most importantly resources to run it.
I kind of doubt that they would optimize for an underdog in the search engine space, they'd be spending money on something fundamentally unprofitable, also because there's going to be a high overlap between the users of such an engine and those who would use an ad/content blocker