My MRI didn't show anything wrong in the first place, so there's clearly loads of other stuff going on in an injured brain which may still have room for improvement even if it's not showing up on an MRI.

'Is this as good as it gets' is, I think, a terrifying question which is likely to give rise to lots of harmful stress hormones. Probably best to avoid such thinking if at all possible. From what I understand of the evidence there is still hope of improvement even after years have passed.

Mark's highlighting of coping strategies is I think a useful focus - even if there is no more improvement organically you could aim to get better at such strategies and so improve your quality of life slowly. Important to keep some hope up I think.

All the best.