The Google-fu is weak with this one (this one being me). I read a post ages ago on the subject of SmartList wildcards which looked like it would be really useful, but then, after I’d forgotton the details, couldn’t find it again no matter what searches I tried.
On the Developing for Dynamics GP blog David Musgrave gives a reminder for those using SmartList Builder that there is in fact a way to modify standard SmartLists by downloading them from here (Customer Source login required) without having to manually recreate them.
When you download them, remember to think kind thoughts of the Microsoft Dynamics GP Support Team who created these SmartLists.