Here is what I'd like from a service (like this):

I submit my insurance profile/needs (cars, bikes, boats, RVs, home, life, disability and umbrella). Your service checks for a combination deal every month and emails me if a better deal is out there.

I buy insurance for many things and auto is only one of them. Usually I use the same company for all/most policies because of the combination discounts and the less hassle in dealing with multiple companies.