I played it on release for PC. It was good, although it felt incomplete. Bugs weren't as bad for the PC version as they were apparently on console, but they were there. New expansion is coming out soon, so there is probably going to be a sale then. I'd imagine the new expansion will improve (I hope) the things the game got wrong.
I wish the narwhal developer luck, but I just imagine his math is off, and when the time comes for a big world event, where power users will be F5-ing and interacting through the app, Reddit will fuck him hard on the pricing. Additionally, power users are going to be his primary audience; after all, most people know the official app sucks, but only the most dedicated will pay for something different. It just doesn't seem feasible.