Specifically, our definition of Stage 3 doesn't match the other two, and is probably what they are trying to more specifically exclude. It is in other contexts, to quote Dom, Stage 3 means "finished, pending editorial nit review---but since multiple implementations haven't happened yet, there's a reasonable chance that we'll discover something is broken, and need to fix the normative content". That reflects more of the consensus we have in Stage 4 in our process.
Would it make sense to align our definitions so that "Stage N" means the same thing everywhere, especially if we hope other CG/WG will pick up our stages?
There is a current discussion in WHATWG about clarifying what makes Stage 3, and it seems it aligns with TC39. This arose because there was some ambiguity about what constitutes Stage 3. I think we fell victim to that ambiguity.
Specifically, our definition of Stage 3 doesn't match the other two, and is probably what they are trying to more specifically exclude. It is in other contexts, to quote Dom, Stage 3 means "finished, pending editorial nit review---but since multiple implementations haven't happened yet, there's a reasonable chance that we'll discover something is broken, and need to fix the normative content". That reflects more of the consensus we have in Stage 4 in our process.
Would it make sense to align our definitions so that "Stage N" means the same thing everywhere, especially if we hope other CG/WG will pick up our stages?