Possibly one for the "nice to haves" but I currently run a script on my phone which (rather crudely) plays off current loads vs what's left in the battery + (optional: forecasted PV left in the day) giving me an idea of when it will run out.
Serves no purpose other than a general indicator if I can get away with running X or not but to me this seems to be a useful bit of information that could be in the put in the portal somewhere?
Example
Example