I think there's various problems.
For one, Sunrise are infamously defensive of Gundam as their flagship property. They've softened in past 15 years (they had some ludicrous ideas as to how it would go global at the start of the century) but it's still a title they have immense confidence in. Consider how Gundam already arguably crashed in the Western market but has come back through sheer determination to make it a thing.
Another issue the question of just how you pitch it to fans outside Japan/Asia. Gundam owes its success to when it was released in Japan. What it defined in 1979, cultural nostalgia, etc. It's a bit like why Doctor Who is a huge thing over here even today but no one talks anymore about something like Primeval. Gundam has the UC timeline which is blighted by dated animation and a large backlog. Something Sunrise had realised by the mid 90s which is why they started the AU concept. So which series does an overseas licentiatensor go with? What will Sunrise even allow them to? We were told the plan was to start the UK releases with the UC timeline but those have never been released here before. What little Gundam nostalgia exists in the UK is for Wing and a bit of SEED and 00.