Not if they charge $10 for it. Thats a decent price, and its a game you can play at least 4 times to experience it differently. 4 player mode could also increase enemy counts or damage/health ratios to make it less of a breeze to play with 4 people. Also, total party game if you have friends over and not playing it online.
People can beat SF in 30 mins or less, yet we still all bought the game multiple times on various consoles and remakes. Why are we all playing HDR online these days? Its fun! Who cares if you can beat the game, going through a romp with a group of friends, or having matches or whatever is just fun.