I'm not sure if this is just something that will be seen in these early previews or if there is some actual limitation causing this but I've noticed the trees and plants have very little shading and for me that's extremely jarring. Nehrim's forests did not have the lime green pixel glow I'm seeing in Enderal's forest zones that were shown in the demo. Am I the only one who sees this? Is it perhaps something you're working to change? I've not seen anyone mention this anywhere so I thought I'd poke my opinion in to find out why that is, seeing as Nehrim was one of my favourite games I ever played (Treomar, my lord that was something else) I would hope that it's successor was every bit as beautiful if not more so.
Apart from that I'm extremely excited for Enderal. I hope you can keep the level of detail as high as it was in Nehrim, and if time/resources permit more side quests would be amazing as well.
On a personal note I hope we get thrown deep underground again, I doubt I'll ever forget that moment of plummeting to the lava chambers and dwarven ruins.