Eh, a bit of a shameless bump because I still find this topic interesting, and with covid-19 keeping Hollywood somewhat down it'd be nice if in the future mainstream entertainment wasn't so localized to Hollywood.
True, and I've always been a really huge Jackie Chan fan myself. None of the others can do as much as he does with as goofy a grin as he has - he's just such a happy guy it shines through in all his roles, something you don't get in most action stars. And using literally every bit of furniture as a weapon is just something no one else does, that it makes all his action scenes so unique. Shame he can't do quite as much of it lately now that he's older, because no one else comes close.
Ultraman I think especially could do well here in America given the right push, I've been watching some of the series thanks to the new Blu-rays from Mill Creek. If Japan could pull off several solo movies on the level of Godzilla (which can happen with the upcoming Shin Ultraman) or maybe some cartoons (I think there was a Netflix anime series), I think they could find a real foothold to try and get him into mainstream here.