hmm.. right. In some cases even triple the plugins if I add one for European and one for Japanese versions,If you do this you will have to make double the plugins for PC engine and mega drive for all the new magic numbers. Seems unnecessary to me but whatever.
The already huge plugins list in Wiiflow (17 pages!) would become gargantuan and confusing to navigate.
The background renaming workaround still seems the simpler solution after all.
I have to think about it