Been busy with other stuff so unfortunately.  I just finished adding the DDE support to ExQueues.  Probably the first beta cut will just support the DDE drag and drop support from Directory Opus, as this is the most elegant solution and what I'm going to want to use anyway. 

So basically a Shift Drag and Drop will do a

ddeexec [queue( {destpath} {allfilepath} )]
ddetopic ExQueues
ddeapp  EXQUEUES
"ExQueues.exe" /dde

command sequence in DO.  The idea is you drag and drop multiple par2 files, which then has a default behavior of say "Check par, extract rar, delete rars and pars".