This is a suggestion for Dokuwiki as a whole.
Background: We all need to restructure, particularly as a project and documentation grows. The problem with this is that file structures change and although some references may be automatically adjusted it isn't true for every type of reference; anyway as other plugins arrive it is hard to predict their syntax so it can never be foolproof.
Potential Solution: give every page a unique id independent of folder structure. The folder becomes an attribute of the file in effect. we see this already in other app where moving files does not 'break' the link supplied to anyone or referred to a document etc.
I realise this is probably a huge architectural rethink but I suggest it as a long term goal to make Dokuwiki future proof.