Seems kinda silly the way they are, but being able to rewind and rewatch stuff helps a lot.
Tutorial Video Playlist - https://goo.gl/9R2rCb
On that note, the final game should have playable tutorials for each class. Video tutorials are just about worthless.
And I figure someone's surely already mentioned this, but you should be able to 1v1 or even 2v2 with your friends so that you can practice stuff, maybe even allow the creation of servers with no kill count so it doesn't have to load and show the score screen every time.
Team Orochi Gameplay - https://goo.gl/pZYOgM