It's not about world domination. It's about using modern technology to commit a mass virgin sacrifice that used to be done in ancient times. Plus Cochran is also doing it as a sick evil prank on the children.
You've seen Guy Standeven in something because the man was in everything.

Conal Cochran explains it here…
Do I need a reason? Mr. Kupfer was right (you know)–I do love a good joke, and this is the best ever–a joke on the children. But there's a better reason… You don't really know much about Halloween. You thought no further than the strange custom of having your children wear masks and go out begging for candy. It was the start of the year in our old Celtic lands, and we'd be waiting in our houses of wattles and clay. The barriers would be down (you see) between the real and the unreal, and the dead might be looking in to sit by our fires of turf. Halloween… the festival of Samhain. The last great one took place 3000 years ago when the hills ran red with the blood of animals and children. To us, it was a way of controlling our environment. It's not so different now. It's time again. In the end, we don't decide these things (you know)–the planets do. They're in alignment, and it's time again. The world's going to change tonight, doctor. I'm glad you'll be able to watch it. And… Happy Halloween.
So I don't think it has to do with world-domination. He says it's about "controlling the environment" which I interpret to mean population-control. Yeah, it's awful to target kids, but this is one sick dude who loves playing tricks on children.

^this^

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