So far the changes you made to the B5 Autopar seem to be working well. With Autopar turned off, I'm not getting downloaded posts re-added to the download list like in B3, the pars are going to the Wish List like I want, and the download stats are being updated.
Would it be possible to have the "Send Pars to Wish List" switch enabled when Autopar is turned on? In other words, it would send the pars to the Wish List (for people who want that), but would go ahead and assemble the file if it is complete without needing any pars. If it did need pars, we would manually add them ourselves from the Wish List.