That looked pretty damn good! Seriously, interactive environment, more movement options, proper stealth system, good combat animations...
If they maintain the quality of the story from the first game while improving gameplay, this one will be a winner. Don't get me wrong, gameplay and combat weren't bad in the first game, but the combat was definately the not-so-strong point of the game. If they can overcome that, keep the RPG elements strong, keep the story and characters interesting and make it all come together, this might be one of the best RPGs ever.