For me, there's 2 parts to my excitement, or lack thereof. It's natural to feel underwhelmed, certainly just by the very short preview it all looks underwhelming. Nothing looks new there from a graphical standpoint so the cool-factor is already low, and usually to sell something some of the best is displayed to garner attention, and that makes me wonder if it's more copy/paste armor.
You can't really blame some of us for feeling underwhelmed given what was shown. Of course i'll still be here, I'll continue to be optimistic despite having my occasional doubts. If the battle system is adjusted and fun, I can only imagine these dungeons will be pretty damn exciting to play as well, so I'm really looking forward to seeing how everything in this patch will turn out.