I think I see three distinct requests for Home Away followup - please correct me if I get this wrong:

1. An additional set of questions about the guest's party composition, including ages of children (optional?)  I'd also like to see an optional field, perhaps with drop downs, for intended use: Reunion, family vacation, wedding reception, etc.  It would also be nice to get the renter's age and get it documented right up front, instead of having to sneak into the question on the phone.

2. A way to keep a shared database (available to all verified, active HomeAway and VRBO homeowners) that lets homeowners rate and keep notes on past renters.  Since HA does not require renters or even potential renters to create any kind of record (and I'm glad they don't!), I'd suggest that HA use some combination of inquiry email address and / or phone numbers as a record key.

3. Some mechanism to download the entries in our individual Reservation Manager histories into an Excel spreadsheet (or at least CSV format).  Ideally it would include  all known contact info, what dates they inquired about, what dates they rented (or at least an indicator as to whether we created a "booked" entry in the calendar forthe person), and whether they have rented multiple times and the dates (perhaps one line item per start date?)  Ideally, there it would be in a format conducive to sorting by renters versus inquiry only, and for those who have rented or inquired multiple times, some way of sumarizing them into one line item per contact.

Secondarily, for owners with multiple properties, a way to consolidate the renter / inquirer info across multiple properties - although this could reasonably be done within Excel even if we have to do a separate download per property.

Have I summarized (and added to) the OP's request appropriately?