WotLK Client with new Models also to receive newer graphical effects.
So if the title isn't clear enough, Cataclysm, Mists, WoD and legion all added new animations, spell visuals, etc. Things of note that come to mind are:
-Basically all shaman spells (mostly cataclysm spell effects for lightning and water spells)
-Many mage spells
-Many priest spells
-class specific casitng animations
I don't know how hard it would be to implement these graphical improvements to the WotLK client, or even BC client for that matter, since I have absolutely no experience with how the game works code-wise. But I think it would be great if we could get this!
-A new player to Warmane that noticed the WoD models in wotlk!
As long as it would be optional i'd be fine with it. I like the old graphics/models. They are part of the nostalgia and reason why I enjoy the wolk servers so much.
There you go.
Installing Cataclysm water is also very nice, just google "Cataclysm water 3.3.5"
Keep in mind that if you allready have wow with WoD models, you have to down patch and it can be very complicated, it works flawless on old client though.
Also keep in mind that if you add too much on your wow, addons etc, you need a program called "large adress aware" it basicly makes wow able to use up more ram, so the game itself dosen't crash.
Otherwise your most likely to crash the game every time you enter dalaran.