It would be nice if any such database could have more information about each module and be easy to filter.
Then I could simply filter by format (e.g. AHX for chiptunes) or MODs that are only 4 channel 8 bit, or by genre, or by artist. The current system of MODs spread around various preservation projects without detailed information is a mess.
Most are zipped, and often titled with the extension first. A nice database would let you filter how you like and download single or multiple non-zipped files titled properly for modern operating systems.
Such a project would be a huge undertaking and require modland, amp et all to actually collaborate. Probably not going to happen