Thanks for giving it a try!
Lock-on is definitely in the cards - right now the character should snap to the direction of a nearby enemy in front of her or in the direction the player's telling her to move when she gets an attack input, but it's not quite enough.
The camera issue you got is a bit of a surprise to me. Its maximum distance to the player decreases when you get close to an enemy, but unless there's terrain in the way it should never come particularly close. Could it be there was some terrain feature you didn't notice getting between the camera and the character? Making that transition more gradual is also on the to-do-list.
Regarding the orb, yeah, I haven't really adjusted it properly for the new enemies - when I taught them how to jump after an airborne player, I also made them nigh-impossible to intercept when they go for the orb. I have vague plans of how to fix it (Ico-style kidnapping or having to knock the orb down before they can do real damage to it, much like the player's damage states, as well as having segments where the orb is just safely flying out of reach of the enemies so you only have to worry about yourself), but right now it's definitely got problems.
I hope to see you at DD50 as well :)