Yeah, the good old Chunky Monkey will hold it's own for eternity. I had a 1J a while back, but that was my only experience with a CM. Yesterday I got a Super 1S reissue and I don't know if it's the bright whiteness or the fastpacks or what, but it instantly replaced the 1/48 as my second favorite valk toy. First will always be my 1S Joke Machine.
I think it would be interesting if Bandai made a few slight alterations to the Chunky Monkey, like new heads, articulated wrists, rotating thighs, a collapsable gunpod and the ability to lock the legs in place in fighter mode. It could all be done easily and it would only improve the greatness of the toy. Of course it would never happen since there isn't much of a market left for their Chunky little Monkeys...