I thought it was overdone. It looks like the kind of trailer people will be making fun of in 10 years. Nice to see a lot of the old gang back tho.
The only thing I'd say is we know what that 'awful future' is and why they're trying to change, but to the non-comic fans and general movie-going people seeing that, I don't think they'd have a clue what's going on.
I don't know anything about this "awful future" so whatever it is will be a surprise for me. Based on your post and what I saw, I'm guessing that the future version of the characters are in a timeline different from the one we saw in the other X-men movies. I haven't been following this thread so I don't know if that's been talked about already.