The SCSM console has these tasks already, but the portal does not. The task copies key information from the initial WI to the new one and automatically creates a relationship.
I'd like to see 'Create Problem' on the Incident form, and 'Create Change' on Incident and Problem forms.
There are probably others that would make sense (like Create Release), but these are the two that our users are desperate for.
Somebody has already mentioned selecting multiple WIs in tabular views to create PRs, so this functionality would accompany that nicely.
But to have this field in the overviews next to the modified date will be extremely useful.
It would be useful in the Asset Management views as well.