WTH: Area Card restrict/filter entities to use

I’ve tried to use an area card. However, I just can’t as it isn’t possible to filter or restrict what entities are used. I can’t use the average temp because I have devices that report esp/cpu temperature which will skew the data. Similar with switches, I want it to only care about certain switches, for example fan switches not the air purifier fan being on. Please give some amount of control for this card.