The pieces for me over all are hit and miss, but when he is on, those things are crazy. I'd love to see more of sculptures into actual giant toy shapes like the army man made out of the discarded toys. I think the two you chose pics of are probably the most powerful examples.
Cool & Interesting. Gonna' have to check out more of this guys stuff! There's a few people out there doing massive mash-ups for lack of a better description. I really like the incredible detail Kris Kuksi brings to his pieces.
Yeah, mash-up is a good word. World-building is something that I would use to describe the work of Kris Kuksi.