I wondered if you could add an option to sort by columns? i.e. click on a particular column to sort by that column. I wanted to sort by type so synth and fx were seperate as it would be easier to see what's what.
A rename option for categories would be useful too!
Also, add options for remove disabled, check boxes to allow selection of several VSTs at once instead of delete one by one. Which also means adding further options for Select all, Reverse selection, Select disabled, erm... think that's it!
