Welcome! This forum has a treasure trove of great info – Scouters helping Scouters! Just a heads up, though - all content, information, and opinions shared on this forum are those of the author, not the BSA.
I have not seen a nationally maintained list of reservations and camps in years.
I suspect there are identification, data maintenance costs, labor costs, and possibility tax related issues. I suggest talking to your council senior staff if you wish to have your council sponsor this request.
Yes, and while they offer, “long cruise” as an activity, there are plenty of aquatics and “time on the water” activities that cannot be logged as part of long cruises so for kids like mine who is both a sea and land scout, it is still difficult to track aquatics activities that do not count toward the long cruise.