Two suggestions I can think of:
1 Can Recuva be made to ignore unrecoverable (red) and partially-recoverable (orange) files -- i.e. filter the list?
2 Can an option be added to ignore certain file extensions (e.g. *.tmp, *.hlp, *.dll, *.exe) -- a list you can add to.
Can these options also be made available in the INI config file so they can be set in-advance for the portable version.
Thanks!