What do you guys think?
It never will be. I mean no offence by what am about to say. Mainstream usually means its big in America. This will never be "big" in American because you have to read subtitles. Majority of it's people don't have the attention span to do that. Or care to to do it. Why do you think they do remakes of everything? I don't want to just insult American here, so I'll start on my own country. England, animé isn't that big here neither. Although we mostly show original Japanese dub for films, mostly from what I've seen we do have the attention span to read subtitles, but it's just not "that" popular. People here are hypocrites. They berate people for watching it calling it "cartoons", then they go off and watch Family Guy or Simpsons. So there is no win-win. The mentality isn't there.
If a big studio in America took a risk to try and make it mainstream, it'll be an up hill battle. They'd have to have some gimmick I believe, if you watch it, it's "cool" to watch it. For example, I know some people that watch Big Bang Theory because many other people think it's cool. When they don't really get it. I'm not saying I get the science side myself, but I know enough to get me by.
I think I've just ranted and never made sense. I just woke from a nap. Brain is restarting.