Basically, the online mode sucks and if you don't want to pay for this service, then you'll need more single-player content. Not everyone has friends(/gf) of the same level that can come play at home. Nowadays, everyone plays alone with their friends online. Also, singl-player content mean different modes and bring widest experience to the player. Sometimes I like to play Smash Bros. in a competitive way and sometimes, I'd prefer just playing a totally different way the game. That's why Smash Bros is nice and why it works. Smash Bros 4 lacked of singleplayer mode and I personally get bored after few months playing. Anyway, with the new Stage Builder coming tomorrow, it'll had enough contents to satisfy me.