I had fun with the demo but I don't know if it is a Day 1 purchase for me considering I'm still immersed in Skyrim and with ME3 coming out in March.
The positives for me were the fast, fluid combat and the loot. It looks like there is a good variety of weapons and armor with a fairly sophisticated crafting system. I found a few pieces with sockets for gems but I couldn't figure out how to utilize them in the demo.
I'll be eagerly waiting to see how the reviews look for the final product.
PSN/XBOX Live: Destro75
BattleNet Tag: BaronessMD#1680
Gaming PC: i7 3770K OC 4.2Ghz, 16GB RAM, MSI 4G GTX 970