Oh, I agree with you that Stiles *could* become the Pack mom [it's a trope I really enjoy, I just hate all the hand waving that goes along with it] but it's not his default setting because *his* group is so small.

And yeah, Stiles is the least nice guy on the show outside of say ... an Argent ;-) until your his because he is exactly as possessive as you say. I love that about him.