I'm developing latex packages. The development versions of packages are each in their own texmf tree. This means that I quite often add and remove roots in miktex settings e.g. to compare the development version with the current version. This is rather slow: When adding a root I have to click through the folder tree to find it. Also miktex quite often regenerate the FNDB of all roots in this cases.
Could you add something that allows to activate/deactivate a texmf tree faster? I wouldn't mind a command line tool or a command line option. It is also not necessary to regenerate the FNDB's (if something has changed in the root I can call initexmf -u manually).