Feature request: more filters on friend list

Currently, in the little gearbox dropdown on the friends list, there is a checkbox to show offline friends or not. I'd like thre to be more checkboxes. such as:

[] show mobile [] show in-game

Reason being, the suggested invite thing, often misses friends I could potentially invite. and I never use the stupid mobile chat thing to talk to people, so those people are wasting space in my friends list display