Nerdcubed, I believe, has been harassed to stuff over Blockland, but I would like to see a second attempt now that it's on steam.
Indiestatik I have no opinion other than I personally dislike him for reasons.
Pewdiepie is horrifying, but regardless of this issue, he probably wouldn't be the type to play Blockland. (gotta admit hed be pretty good publicity though)
Totalbiscuit COULD do a WTF Is about it, but I'm not completely sure if he'd accept it since it's a pretty old game.
((maybe biased, but I'd like youtube.com/omfgcata to do a Fan Friday of Blockland (since he never did an episode of his series "The Greenlight" for it despite my attempt :c) because he might be pretty good at just richarding around on servers and having fun))