i tested quickly your apps, and i notice for pkg minis, fail related to SFO when trying to create directly PKG from param.sfo HG.
You have to modify previously the param.sfo before and it ll work.
it s really tiny details because people who are going to do it will probably do it with already right SFO.
Also you can include Neogeo game (similar as PCEngine but as 04 instead of 00 for last byte of attribute)
In the same manner, there are may be some interest to make it also for Video or TV category.
For edata and theme (i did not test), it s nice you think about it (you can may be also include the edata encryption for it? for the conf file it s content type= theme but that you already know)
For thread releated to edata, there are aldostools who made good one in case there are users who want to read more in detail:
Also, what s about translation into different languages?
Thanks you for your great apps (sorry if my comment sound weirdo and explaining something you already know, thanks you again)