I think you have to do what you have to do for your sobriety. Protect it by all means, if that means getting someone that will help you faster, sooner, or be there or whatever it is then it's nobody's responsibility but the one that is miserable. Some people take on sponsee's casually. I had one that wanted to take on every newcomer and she never had time to give to any real step work she must have had 40-50 sponsees in addition to having two small boys and volunteering in their school and working. I don't begrudge her the job the kids, the family time or the school. I do however think it's irresponsible to take on sponsees and then not have time to even chat on the phone.
I don't see a sponsor as me having her at my disposal whenever and however I want but there has to be something that works, otherwise it's just a friend you met at AA.