We have different names for some of the default fields. It would be nice to cosmetically change the names that are displayed without having to use custom fields when those fields already exist and have functionality inherent to them.
For example:
Assignee (we would like to call this owner). I don't care what it is behind the scenes, but for our process, being able to have these show up with names we want would be helpful. At the very least, it would be nice to have an alias of a custom field that would be put into one of the standard fields.
Also, it would be nice to rename "task":
We would like to call tasks something different to fit with our process instead of potentially confusing users with 2 sets of terminology.