don't worry there's always obscure stuff you can't play until some works on it like those Bluray Hybrid pack (Macross, .Hack, Eureka7AO, TekkenTT1 etc) you can't even watch the movie part if your ps3 isn't in the right fw...
And my guess is, since a lot of japanese publisher pretty much stopped supporting the 360 in japan, japan-only niche games will remain unplayable (I'm thinking EX Troppers(capcom new "anime" Lost Planet, Robot Taisen, games takiang forever to come out like Tales of etc), anime related games etc) (let's hope they don't start region locking it like Persona4UMA)
Yeah, I guess I should just update if I feel there's no solution for my problem and since the homebrew scene on PS3 isn't that great(it's a shame really), I'm still using the region free PS1 emulator (picked up an old save of Valkyrie Profile^^) and region free blurays.