lol, oh wow, ok first you said (essentially) 'The Japanese don't know what Anime is' and now you are saying 'we are Americans and we will misuse this word the way we want!', don't get me wrong I get/agree with your point, and I am not arguing nor trying to change anyone's mind (even if I do enjoy a good debate), but boy the wording. No wonder the world thinks we are arrogant. You're killing me, lol. Let's just say the Japanese shortened the word Animation to Anime, and we shortened Japanese Anime, to just Anime for the use of the discussion. (how about JAnime, sorry couldn't resist, jk around).
The X-Men anime would have to count, but not the rest of the x-men material. What would be pushing that line is if you did a mixed one with the X-men anime and TAS or one of the others, that was close to even or so, (not to mention the heavy art shift), the anime would really have to be the majority there, to not feel wrong. Mixing it with the normal movie on the other hand could make for an interesting project, I am seeing the people turning into the anime characters or back... Feel free to run with that if anyone wants to, doubt i will get to it any time soon, & it might be fun.

But what song would go with it?
but yeah there has been more and more crossing over as time goes on, and that is just bound to increase from here on out. Just like the line between live action and cgi are blurring badly, and soon we will be hard pressed to tell the difference.
And I say if you have to 'google' it at all, the line is pretty blurry... but then my eyes suck, so pretty much everything is blurry to me.