Source
SLIGHTLYPISSEDOFFMAN•

Other small fixes, such as errors related to packages, factions, and AI data are also implemented. One may notice for instance that whenever a thief is encountered upon the road who tries to rob the player, he apparently has absolutely no concern whatsoever for his or her own safety or well being, and is willing to throw his life away at any time for the chance at a few gold coins. In other words, the intimidate option never works, but with the fixes implemented to the correct AI references in the Skyrim Supplemental Patch, now the encountered thieves will behave properly and can be properly intimidated if the player possesses the high enough intimidate factors.

Intimidating thieves has worked just fine for me, what the hell is this fixing, exactly?

This, and the author's unwillingness to actually log what the hell they did when they fiddled with packages and factions and "other fixes" leads me to a no. It looks like there's no clear list and the author probably doesn't even remember all the things that they did and thus has no easy way to completely see their mistakes and revert back multi-record issues that they caused accidentally.

There's a reason USKP has a tracker and changelogs...

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