I've wanted to allow friends to try this game through my own copy for a while, but since family sharing is disabled by the devs' decision, I just wanted to argue that allowing friends to try this game through family share could help draw players into the game.
This is mainly a duo game; this game gets heavy competition from similar, free to play games (like TFT, DOTA Underlords); using a friend's copy isn't a good strategy in long term due to the duo game nature of Legion (you can't play with your friend until they buy their own copy); and one of the biggest issues this game still faces is its low playerbase.