Should target temp be an average of all the entities in the group

[LucidityCrash]

Currently the Target temp is an average of the target temp of all the climate entities in the group, this leads to strange behavior when using a Thermostat Card in Lovelace, and if someone manually updates the temp of one of the Climate entities in the group then the value for the group is recalculated.

It would make sense to me for the target temp for the group to be its own attribute and not one that is calculated from the values of the members of the group.