It's debatable what all needs to be improved, but suffice to say, things have not changed much – they don't need to be changed.

Combat can be a bit more involved and varied now that parrying is not basically unlimited and there are new weapons and even spellcasting.

As for the Forsaken powers, they can be shared to other players and some effects of them are utterly ridiculous. 15 minutes effective downtime is just right.

The portal thing is going to stay as is too.