Have you actually played the beta Len? If not you are making some rather silly comparisons.
Yes, Porings have been partially replaced as the signature monster of RO2 by a somewhat cuter
leaf monster thing. By no means are Porings gone though. If you haven't even found a screenshot of a poring yet I doubt you have enough information to assume that it is a poor spin-off of WoW.
Actually, I see absolutely no comparisons stylistically. The games have a completely different feel to them. I personally think WoW is inferior. I have a very low opinion on WoW though so I'm hardly impartial.
From the many game-play videos and screenshots and NPC/mob montages I've seen I can see great reason for excitement. My only problem with it is that the monsters are kinda obnoxiously cute when in a 3D world. In RO1 the monsters can kinda get away with their cuteness since it's cartoony to begin with. I seriously hope that some foreboding looking enemies are added at some point. I've yet to even see anything that looks like an MVP. Obviously monster ideas are still in development.
Either way I will play, and I can almost guarantee I'll love it. I dont know about everyone else. This is the game I've been waiting for.