Controller Aim issues

Two things:

Mobs behind walls should not be able to be targeted as they cannot be hit. Same for those weird ethereal and lightless mobs. Super annoying to have to deal with.

Also, can you lower the threshold for dropping a target so you're not standing in a pack of mobs while still targeting something on the far end of the screen?

I'm playing focus and even with being able to manually move off of a target, these issues are still annoying.

Thank you.