Realtime Lightmap Density?

There has to be a way I can edit the lightmap density for my objects in real-time. Currently, the only way I see you can see the density is to change, save, build.

Am I missing something here?

Hi!

Yes, real time preview and selective rebuild Light Map currently unavailable.

Will the real time preview ever be made available again, as it was very useful and if you have a large scene it’s more of a pain to check lightmap density?