User blog comment:Math34/The future of League of Legends/@comment-5077844-20150824190956

As long as this game is still unfinished ( and by that I mean, that there's still outdated champions, items, splash arts, maps, lore and overall old designs), Riot will update it and we will keep playing because of that.

LoL's biggest feature is the fact how it basically changes monthly and remains interesting even if you already own everything.