I think Drac blinking at the end was purposeful and not an accident in bad acting of a dead guy. So, imo, this lays credence to what Phoenix said about the purpetual resurrection. I'm interested to see what other vamps are out there for Simon and Sophia to track down.
If they do make additional series' will they get a bigger budget? I'd like to see Simon wear something more battle ready than standard fantasy street clothes. Preferably barbarian wear, but that's just my nostalgic taste.
I would also love to see more Reinhardt, while it was obvious to see his death coming a mile away it was nice to see a kind of "simultaneous kill" kind of death (though the blows were far from simultaneous...) with the other big bad from the series.