I think you just have! We have two very receptive lurkers here who will no doubt make note of your suggestion.

And it's a very reasonable suggestion - I keep multiple flexible reservations open while my travel plans solidify; the ability to oversee and manage them 'at a glance' is very important to me. I do perhaps 60 nights a year - 50 of which will be with Hilton or Marriott and the balance falling to other chains that are available in the sometimes very out-of-the-way locations where I work - Best Western (who also let you see your bookings in aggregate) etc.

This also means that sites such as awardwallet.com, (which primarily lets you see all your mileage balances) can also scrape all your bookings and sort them by date, so you can then see all your bookings from multiple chains in one place - and elimate any duplicates (or spot any mistakes, as I once discovered).You can see below I have 3 reservations on the Rome trip (I have deleted the specific dates from each booking for privacy reasons, but you can normally see the specifics at a glance) and one reservation on each of the other trips. The Marriott Courtyard was the first booked, so it displays - when you click through, you can also see a Best Western booking and a Sheraton booking).

There are many similar applications, especially for iPhone or Android that are increasingly used by travellers, so WR would do well to join in the fun.