We should be writing a review for Hyrule Warriors this coming week, so I'll save any thoughts on the game until then. I will say though that there's a decent amount of content in Hyrule Warriors, so long as you're down with the core concept at least.
If you are into what the game is then good news, Nintendo/ Tecmo Koei will be releasing some new playable characters for free. You'll be able to play as the bad guys Cia, Volga and Wizzro from the 16th October
There's more dlc planned, with a season pass up on the eshop (£13.49), it needs 1.6gb of space, which is a bit worrying for those of us with the 8gb WiiU. The paid dlc will include new scenarios, characters, costumes, and another map for the Adventure mode