I have thought alot about your proposal for automatic loading so that it
is not necessary to edit anything, just drop a file in. There is some
real appeal for that kind of a feature ... but it is hard to implement.
By hard to implement I mean really hard. Just because a file is opened
and written to, it is not necessarily ready to load. I hit C-x s alot
when tweaking files ...
Even if I hacked some kind of inotify support to watch a directory for
IO activity I would never know when to actually load it.
If you can somehow signal when a collection is ready for re-scanning
I can see an implementation ...