As a not really casual but not really hardcore player, I like the idea of contest mode. However, being unable to complete contest mode in the limited time and not having an option to retry later kind of detracts from the spirit of raiding that I really like - the ability to try again and again until we succeed. I feel like having a toggleable contest option for after day 1 would be nice. There doesn't need to be any rewards associated with it; I just want the ability to practice. Master mode isn't really the same thing either, with the extra champs and the ability to overlevel.