1st does it take into consideration if the player owns the village or not? because we obviously get more recruits if it's our fief but does it affect the # of recruits the recruiters get?
I'm currently working on the village and faction relations so they will be taken into consideration.
If your relation to a village is higher, recruiters can also get more recruits from it. Also if there's recruits of better quality, recruiters should be able to recruit them too.
"A recruiter has brought 50 Swadian Knights to your town"

2nd could we make a recruiter for the player party?
It is possible but very hard to do. For example, what would happen if there's not enough room in your party when the recruiter returns from his journey?
3rd you said that recruiters could only get men from villages, would there be a way to make it work for hiring mercenaries too?
That would be pretty simple to do, only the menus would be a bit arduous to do.