A couple of conversation starters

(I also wouldn't make this "ad hoc". I'd design a proper "Mediawiki Wizards" extension, so that all that would be needed in future is a bugzilla request: "Please add a wizard hook for X, that provides parameters P, Q, R". The conditions it fires (parameter based) and the actual wizard pages, are then configurable on-wiki, either via a "Wizard:" namespace, or stand-alone like AbuseFilter.)