The video playthroughs make it look promising, though. I am thinking of getting the second expansion pack Dissolution of Eternity, but I don't know if it is really worth spending a few bucks on it, since I know that despite it being a Quake game, it is quite different from the original and Scourge of Armagon in terms of gameplay.
I am a Quake fan and enjoyed the original game and its expansion pack Scourge of Armagon.