Well maybe there could be more "maturity" in aspects similar to colosseum/XD's "shadow pokemon", or more developed/bad "evil" teams, but I don't think it should go as far as real, permanent, warfare violence in pokemon. That would be too much, even if it is more realistic. Plus either way it would never actually be created, I don't think.
I'm sorta back
While I'd always love to talk about anything pokemon, I will only be using the 6th gen Wifi section for a while out of efficiency in my life, unfortunately
My 3DS friend code is 0576 3520 6954