I am under the opinion that people who don't enjoy watching the lighter weights aren't really true MMA fans, what does size have to do with anything? The lighter guys are most often the most technical. I'd also prefer a 5 round war than a 1st round KO for my Main/Co main.
Although as I already mentioned, I do believe the judging system needs a lot of work, I have to agree with Bresk here. The 5 round technical wars are awesome to watch.