There were probably a TON of kids who bought Smash just for Sonic and found they had to either play right up until the end of SSE, play a dozen hours worth of fights or 300 vs matches just to play as him.
He should have just been available from the start. Especially this time around if he comes back after how much he's associated with Nintendo nowadays.
Yeah, kids were just so excited to play with sonic after all the great games he gave them this gen.
But yeah, he probably should have been more easily available, considering how much Nintendo promoted him being in the game.