I like the throwback look to earlier Upper Deck inserts, but they missed the mark a bit with this set. I discuss the Guitar Heroes subset in particular in my blog: https://armchairmaestro.com/2018/09/21/2008-upper-deck-heroes-guitar-heroes/

One of the worst sets of all-time in my opinion. Why did they make this set with three or four cards of the same player just with a different picture with each card and a player checklist card? Dumb!!!! Everyone that I knew that opened these boxes of cards hated this the set included Olympic and guitar "Heroes". When I buy a football box I would like football players not some drugged out guitar player or an over weight former Olympian. Sorry, needed to get that off my chest.