well it was Carpenter's big plan to make the next couple of Halloween films after #3 to all be independent storylines - and make a series of different horror films.
but i think it was the producer/dolly grip or someone in charge, Akahah Muoohammma (?) forgot his name now, who wanted Micheal back for #4.
i quite liked 4, 5 and 6. and H20 is very good.
they erased the storylines brought up in 4,5 and 6 for H20 - but apparently the continuity can be joined. Apparently H8 disputes that guessed continuity. thought Halloween Res was just awful anyway.
would have bought the boxset by now - but it dont have #6 and i dont know why. different company made it?