Disregarding whether it's possible or likely or whatever for a moment, localization is always good. I think, as players of the game and as a community, we should definitely be hoping for such a thing since it allows other people to get into the game. While there isn't really much of a language barrier for these games, there are lots of people who may not be keen on the idea of importing a title like this with no real way to try it out beforehand. I didn't get vanilla until the The Best edition was around, and I bought it second hand. I also didn't even know it existed until I started watching Brett's streams, honestly.
So, I think that if it came out of Japan, it'd only be good for the game and the community. It means more people are aware of its existence, more people are probably willing to give it a shot, and so we'd have more people playing. The more the merrier, really. Even if it is only digital, and they cut out the music (but probably still leave in the custom BGM feature), I think that would be better than nothing.
Will it happen, though? I don't know. We're getting JoJo surprisingly, and Bandai Namco seems a little more willing to localize stuff recently. But I don't know how confident they are in the Gundam brand right now. It seems to me like it is slowly resurfacing with things like Unicorn and The Origin manga, as well as being able to stream most recent Gundam shows legally on youtube. So, the potential is there, at least. Whether they'll tap into it remains to be seen.