sequel idea
For the supposed sequel they're occasionally planning for this continuity.
Copycat killer. The Michael Myers in the Zombie films had too notorious of a look to be impersonated by anyone.
But the original continuity, basically anyone of roughly the same size could put on that infamous mask and taken at a glance for Michael Myers. So maybe the new movie could be regular plot as we know it, but then, near the end, we find out the killer is some random nutjob who either wants to be like Michael and/or has reasons for killing and figured do it on Halloween as Michael to evade suspicion. Then, the real Michael would show up and kill him.
Not terribly original, I know, and they've sort of touched on it in other films, but, it'd be a fun twist, and these movies mostly aren't really masterpieces ;)