It does sound exciting, but I'm not sure I could contribute much as I don't know much Haskell and what I have seen of pugs, that Haskell is formidable. At the level of the p6 language itself, well based on the p6 code I have seen posted of PM, it looks like a considerably different language to me.
I am no stick in the mud, but perl5 is a solid, higly optimized language/compiler with a vibrant community. I am still having a alot of fun writing p5 code. I will evenutally switch over to p6, but haven't hit the crossover yet.