I agree with Rhomal.
Security is the concern of the site administrator.
Site usability for your users is the primary concern.
This could be for intranets, behind registration only, etc. a million uses where security is of no consequence whatsoever.
Allow for options, make it usable, make it powerful.
See
http://zonatim.com/ for the wiki wiwimod module, it has options for all the editors to be used, "at your own risk" which is fantastic.