Late reply, but: I think this is one of a few areas where a browser or extension developer can create something that will force every other browser vendor to a

Late reply, but: I think this is one of a few areas where a browser or extension developer can create something that will force every other browser vendor to adapt, sooner or later. Last time I feel that happened was with tabs, so IMO this should is a high-value target even if nobody seems to be interested ATM.