well I tested this method works. but assets ID is only linked to crest not linked to kits minikit and flags banners. So the problem is we cant have banners and flags. That means except a little bit convenient and have anthems, using original id has no advantage over fut ID. If there are enough fut flags and banners it is better using fut ID. If not, using original id is a good choiceagain one question: does someone already tried to use original ids for the national teams added? (there's no graphics in the game, but if the teams use "fut" asset id, only the teams has the proper id) will it work?
1327 Bulgaria, but using assets "113576" for kits, logos, etc (table teams and teamkits).
This would surely activate teams commentary names (I think almost all national teams have their hidden commentary but using real id, and of course, the national anthems...)