1) Increase the number of favorite providers from 150.
2) Provide a notification option if a favorite providers information changes or gets a new review.
3) Second the request for adding a gallery of pics on a providers profile.
4) Second the request for a calendar view for providers (like on date-check) would be nice.
5) Ability to select ethnicity in searches with a check box instead of a drop-down list.
6) Ability to post when a hobbyist is traveling so providers can contact via PM

You can do #6 now by simply posting on the regional board for the city you are going to.  I do it all the time and I always get pm's from gals looking to book me..

That exists by listing the gal in your favorites and checking your favorites list regularly.  Each time she gets a review, or there is a change in her profile, her name will rise to the top of the list.