[FR] Dynamically pool children with small fraction of parent into one "other" child

[wigster]

Is your feature request related to a problem? Please describe.
In m power chart I have a bunch of devices which hover in the 1-2W power category but sometimes they power on and become a significant fraction of total use. This makes a messy chart with lots of tiny end devices.

Describe the solution you'd like
An option to dynamically group together all children with less than e.g. some fraction of the parent's total. This then has conquences to the grandchildren of course, but keeping a dynamic other grandchild at all sections might be possible?

Describe alternatives you've considered
I do not see how this could be chieved using e.g. templates -- one could create a duplicate template for every entity which would go to zero when the source sensor is a low fraction of the total and instead add itself to new "other" sensor, but this would still leave a bunch of zero lines on the sankey chart.