Well, in general terms, they are already building a message box to post the fact that the plugin is missing, and to the best of my knowledge that preset info is stored within the project, so I would GUESS it would mean appending the preset name to the 'missing' message.
IF the above is correct, then I would not think it very involved to add, but I have no idea how they constructed the section of code that generates the plugin missing message.
In any case, I DO think it would be helpful to have that info presented, in that situation.
Bob Bone