there’s an option in renoise to save and load vsti settings in an xrni instrument, but why not have the option of loading/saving fxp programs and fxb banks in that same file menu? there’s a program called cantabile that has the ability to load fxp/fxb’s and have it automatically load up the correct vst plugin, which comes in really handy!
here check it out, great piece of software. (also check out the toolbar that you get with every loaded plugin, it makes working with plugins much easier): http://www.toptensoftware.com/cantabile/
also a small suggestion, after closing plugin windows the window location resets to the center again. it would be nice if the window location would be remembered so when you have a couple of windows open they fit in place again after you reopen them at a later point.