What you're asking is not possible in the LV2 context.
Plugins have URIs as identifiers. If you propose using a small string as another unique identifier, then someone will have to become the authority to manage such list.
For example the case of MDA plugins, there are quite some variants out there. There's the original port by drobilla, the MOD fork and some individual projects that developed specific plugins (like extending the Piano's features).
When mapping the mda-piano to a URI, someone would have to dictate which final plugin is used.
What is feasible to do, is to have this mapping within the MOD ecosystem only.
This would involve some changes to our infrastructure right now, extra work for which I don't personally see any gains.
(also for archiving purposes, the mapping list would have to be kept forever.)
Still, we will consider this again at some later point.