Got my Warlock to 8, enjoyed it, story seems average, not amazing but not terrible, good enough to hold interest. Didnt enjoy it as much as the alpha, largely because theres not really much more to it than the alpha. I'll probably level a titan and guardian to 8 and leave it there. Not a fan of the multiplayer, and not really interested in grinding for "BIS" when its going to get reset anyhow.
The only two things that stood out were how necessary aiming feels, which can be a bit boring at times and it would be nice to be able to check your bounties somewhere (possibly you can do this and I missed it). Oh and the loading, while much better than the alpha, is still too long.
Is the cap in the main game really 20? That seems ridiculously low considering how quickly you hit 8