I do notice one unfortunate difference from Wikipedia immediately: Wikipedia is functional with scripts blocked, Ibis Wiki is not. I'm sure that even Wikipedia nowadays has some functions that don't work without scripts, but a wiki that won't even display its landing page without scripts enabled, is dead while still in the gate.
Right, and what would also be nice is to be able to export articles in different formats, for example markdown, to conveniently read them in your favourite reader application.