Thank god. I really hope Japanese MMA can continue to thrive and support two major organizations in DREAM and Sengoku. The two seem to compliment each other perfectly and could form a mutually beneficial "rivalry" that could stoke the fires of Japanese MMA for years to come.
Plus, as long as Japanese MMA lives on we will always have an outlet for a good old fashioned freak fight. Which, I would argue, is a cornerstone of MMA and though it may seem asinine to watch a 7'2" korean guy fight Jose Canseco, it's certainly entertaining. The freak fight must never be allowed to vanish from MMA entirely and Japan provides the safest haven for MMA's guilty pleasure.