I also have this WTH asking for support for “virtual” or cross-device binding support in HA. These would, obviously, be less performant than real bindings, and also not operate when HA is down, but there’s a lot of value in getting the native-style syncing behavior when there’s a mismatch in protocol between a light switch and smart bulbs (ZWave in particular, has tons of switch models out there, but effectively no lightbulbs.)