I have played 200+ hours. I have a friend that has played maybe 50 and the only difference is 2 levels and a few guns and a good selection of damage types. This game caters to people who don't have the time to play all day. It already keeps it so my time invested stops me having a crazy advantage. So if I want to put my time into getting my characters up and earning the coins why the -blam!- shouldn't I be able to combine them?