I think you misunderstood him, he (I think) meant 'like' a wiki, that is, a hyperlink, the concept of which pre-dates the 'web'.
I would like to be able to jump around entities better, for example my current legendary gem cutter has 8 kids, and I wanted to assign them bedrooms near her burrow area; while entailed noting down their names, then navigating to each one seperatly, instead of just being able to follow a link from her relationships screen to each of their details (did not help that (iirc, I'm not at my DF comp now) there were two children named 'erush', and the relationship screen shows translated surnames names, when the bedroom assignment screen shows dwarvish surnames...
This would be a huge amount of work though, because of all the different UI's; it would go hand-in-hand with a complete UI overhaul.
My peeve is all the different ways DF has of presenting a list of items... some allow searching/filtering, some do not; but the REAL annoyance if all the differant ways of scrolling lists, some use arrow keys, some /* some -+, just a real pain. I really wish Toady had used an existing UI framework that would provide most of this functionality out of the box. (but then, my day job is working on a UI framework)