I'm personally looking forward to the 4.0 changes as it will end alot of "the bad" in multiple areas of the game, Im going to give a little speech now as to the changes and my opinions on certain topics.
Also patch 4.0 will be next Tuesday more then likely as they pushed a PTR build this weekend.
Revival of stats
This is a change that everyone should welcome in my opinion and is in it's own right a major update. With the stats being reformatted and mana regen/conservation coming into play alot more it means that no longer we will see haste being top priority. Ok so im looking at this from a casters POV but I feel that is where the biggest impact is especially healing.
Spirit is finally a useful stat which im happy about across the board because at low levels it doesn't really have any impact and it just seems a waste.
Which leads to...
Itemisation
Ok so your T10 will probably be completely replaced by level 82 by greens you got from quests and that joke of a weapon shadowmourne will do the same damage as a healer mace(ok maybe a little exaggerated) but this is a good thing.
However getting gear in wraith has always been trivial, A new raid comes out and so does a new tier which makes the previous obsolete. We have done this 3-4 times in wraith which is going to finally end in Cataclysm.
Gear in cataclysm will be dished out alot like vanilla in the sense that you may end up raiding with blue items but when you get a epic item it will actually have some merit to it and you would have truely deserved it.
Leveling
I'm actually looking forward to it(wait what?) the new quest lines and new looking areas really do make leveling an enjoying experience. Tied in with the fact then when you level up your spells will level with you also automatically so we don't have to run back and forth to the trainer every 2 levels.
On the subject of attacks, The idea of adding attacks with talent tree choices is awesome and will spice up a few classes while leveling. (thumbs up)
Difficulty - Non Instance/Raid
Ok so I know alot of you havn't played the beta and im going to give you my opinion from my experiences.
Once you get to level 80 and start leveling in the new areas be "cautious" as the monsters will be hitting like trucks constantly(15k a hit) which is one of the main reasons why you will change your gear to "those crappy greens" by level 82.
Ok so maybe not straight when you start leveling as that would just be mean lol. Im talking about the moment you start exploring the level 82 areas.
Difficulty - Instance/Raid
You will need to be switched on for every part of the instance/raid as even the trash have boss like mechanics that will 1 shot you lol. If you have watched any of TotalBiscuit's youtube videos you will see that the difficulty has increased 10 fold for healers and dps leaving little mistake for error as you failing could wipe the whole instance.
The instances all have rather sleek new designs and traits to them which make each very refreshing from the crap we was spoonfed in WoTLK with the only instances offering any real challenge being the icc instances(HoR, PoS) apart from forge of souls because lets face it that was easy also.
So all in all if you don't pay attention you will get stomped in both the normal and heroic versions so do your research on the mechanics
PVE heroes in PVP
Technically this has become even more viable which is disgusting and the glyphs are a complete joke such as then new warlock glyph that when you use fear your opponents wont run they just cower and wont come out of fear when damage is dealt to them.
With the new change that stops resillience from stopping critical hits we can expect more PVE fags in arena which is disappointing as PVP has been crap this whole season with pve items such as shadowmourne being a game winner.
Summary
PVE will be awesome and I can't wait for the changes, However PVP will be destroyed even more then it currently is.
Good with the bad I suppose
