As an aside, though, there is a difference btw attentiveness & hand-holding The agent you select SHOULD be attentive to your career needs (i.e. be able to advise you as to what's best for YOUR career, be your advocate with your publisher, & address business matters is a timely manner). That's what we pay them for. That 15% isn't just for shopping the book & negotiating contract terms.
Your emotional needs aren't their domain, of course (which is what I would define as "hand-holding"). Friends, partners, & therapists are what we have for that part.
That's what I was trying to get out - you said it much better than I did