I know that's what they're intended to be, but to me they're more of a "Hey look, it's your favourite character! Bet you'd like to play as them wouldn't you? Well you can't! Now watch as they appear and do their signature moves until you turn items off in a week"
Oh yeah, I feel that. A few of the assist trophy reveals made me feel that way (Dillon especially). I've come to terms to be happy that he's in the game at all. There's always next time I suppose, just look at Mac.