The next steps should make this much faster. Google's internal version generally gives us a sub-1% hit on everything we measure.

If the community is up for merging this (which is a genuine question - the complexity hit is significant) I expect it to become the default everywhere and for most people it should be a performance win Vs the current default.

But, yes. Not there right now, which is annoying. I'm hoping the community is willing to start merging this anyway with the trust we can get it to be really fast later. But they might say "no, we need a full prototype that's super fast right now", which would be fair.