With tons of questions yes very much so, but not a troll. The definition of a troll is very different from what Joe is doing. Joe isn't trying to provoke anyone in here, he's just extremely happy to be creating 3 thread per day! That's all!
Joe, you can't really keep everything in your repertoire. I mean some works are meant to go away... (Czerny comes to mind... heh...). Thing is, though, that you can always have them 'handy' (like being able to remember what goes on, much quicker than learning them from scratch) and that CAN be very useful in the long run.
I'd dare to say that it's more important to meet and study as much repertoire as possible, instead of mastering a few works to 'perfection'.