As much as I hate to submit a feature request before all bugs in the JSP editor have been fixed (which really should have the top priority), there is one feature I would think is really usefull:
Allow the user to set a default page where a given jsp fragments is to be included. Right now, name completion (content assist) naturally doesn’t work in jsp fragments, since there is no context.
Setting a default page for an include would per individual .jspf and would only be a hint to myeclipse and the validator.
Kind regards