Apologies for any noise, but I'd like to bump this thread to poll for input on whether people feel this pull request requires an RFC, and if so, request RFC karma so that I may submit an RFC. I've already got one vote from @SakiTakamachi for requiring an RFC.
I had an interesting discussion with @cmb69 and @kocsismate about internal persistent resources, and the updated version of the PR relies on PHP_MODULE_GLOBALS instead. I think there are some open questions going forward around how to deal with existing internal persistent resources, so I'm curious to know how php-internals addresses them in the future, but will leave that aside for now.