Features / Usability

Do export and Slideshow not have permissions? Maybe not, and even then you can get left with a more button with nothing on it (so actually a bug).

I usually do this sort of thing (for page actions usually) with some custom css and enable the layout_add_body_group_class pref, so you can do something like:

.wikiactions_wrapper,
.wikitopline {
	display: none;
}

.grp_Registered .wikiactions_wrapper,
.grp_Registered .wikitopline {
	display: inherit;
}