Unfortunately, there's not much I can do about the FPS. I talked to James (zakawale) about it earlier; he said it was a matter of inefficiencies in our rendering engine. (And when I added range animations, the click outline you get when pressing Ctrl-C was always on in the models... pretty strange).
I have added jetways (by placing them over the old-style ones) for EDDK now. I would like to add more for other airports (EDDH has only static for example) but there is no (old-style) jetway on an airport I don't know where to add them. Does someone have pictures or drawings?
As someone (forgot the name) told me from the developers, we all must be able to say where we got that positioning data from and these "sources" must be freely available.