Exactly. DL the JP ver. of games with their patch, install games (outside C:\ and/or Program Files if possible), patche them (in case of, run batch as administrator), and you're done.
Sure it's a little bit complicated/annoying for people who already own western physical copies of PSU, but :
- though redistributing JP copies of games is not exactly legal (I don't own any exploitation right on these game), I just continue to distribute a game that SEGA JP has distributed for free and publicly in the past (the patch/crack is an other subject...) ;
- updated JP version of the game as much more contents than has any western version (although everything is not currently available in game) ;
- for this reason, D&H will be/is based on the JP version, like
Clémentine is. And it make things much more easier for players to already use this version when it comes to update/patch it (bringing the JP contents over the western ver. would be overcomplicated, boring, may break things, etc...).