While working on a small module to enable toolbar configuration per role I noticed that its not possible to define tabs for sub-pages of profile/%wysiwyg_profile/edit at the moment (i.e. as on admin/structure/types/manage/%node_type/display).
If we do a tiny rewrite of
wysiwyg_menu() this will be possible (without breaking something; or at least I couldn't find something ;) ).
Patch follows ...