I accepted a lot of IE features being omitted from PoE with the argument that they were not very enjoyable. I reconciled with other features being omitted with the explanation that development time/resources were not enough. When it comes to the expansion though, I will raise my expectations. Taking into account the fact that the team has experience with the engine tools and has a solid base to build upon. The features I was sort of disappointed to see gone from PoE and want back in the expansion are these, off the top of my head:
1. Arrows, bullets and bolts for projectile weapons.
2. We