Vanilla = can't vote
B/C = 10/10 The peak of wow, especially pvp players, Arena was brand new in there. Zones very diverse Outland was awesome. If you played beyond the dark portal, you will like this visit.
LK = 7/10 Merely was great, because of Arthas and norther theme and raids as ulduar and icc. But the Zones were too similar to each other....not a diversity as in outland and cata.
Cata = 8/10 You guys need to think way harder and be honest. Cata wasn't only about DS aka 4.3 patch. At the start it had very hard 5mans and raids and a lot of diverse Zones. Vash'ir was underwater, Firelands was flamey Uldum was indiana jones desert and deepholm was merely a jule vernes trip. No new continent but the most diverse zones and best quests i ever had, remember the shark quest in Vash'ir. Old content was lvl1-60 was finally remade. Another big plus was the ART on tier sets and items....looked especially on plate users much better than everything i saw in mop. Twillight hammer followers know their fine art! I don't allow this downrating just because of 1 rushed patch.
MoP = 6/10 A boring farm fest based on dailies, the zones are as undiverse as in wrath, just wrath at least hat that snowy north theme. Horrible pvp balance...it never was that bad for such a long period of time. The art on tier sets and pvp sets is the most tasteless piece of crap i ever saw. The story stopped and this addon added asolutely nothing to the once great wow lore. Thats the xpack that made me quit. I gave it 6 points only cause i had fun with oondasta killing multiple raids when this worldboss was first released and all the jokes that goes with it and cause they have done a good job with warlocks and their green fire. The music was well done too in this. Seems the artists always do their homework no matter what expansion it is.
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hm ok i prefered the cata quests though....better quality and more fun and diverse than mop's boring farm quests.