The default behavior of FogBugz when resolving a case is to assign it to the person who opened the case and, in theory, is best suited to determine if the case was resolved correctly. We like this default behavior, and it works great for dealing with bugs.
However, when we develop new features, a number of different people are often involved with laying out the cases and work for the development of that new feature. The difficulty is that, as far as I know, there is no way to change who a case will be assigned to when a case is resolved (other than manually).
What we are looking for is some way to specify who the "real" case opener is, or even an additional person, such as a "QA" person, to double-check that things were done correctly.
We have tried using the custom workflow plugin, but there doesn't seem to be any way to add a custom "person" field to it to use for this sort of thing.