Because the Trinity Core is very buggy , I am sheltering myself for a while in 2.4.3. I'd like to point out some things from there. Includes pros and cons.
Pros
There are more 2.4.3 pre-bc servers now , a bigger variety of them.
Some are heavyly populated , raids possible.
Easier to script now.
Cons
All servers sell gear , some even inbalance the game by that.
99% of the servers are instant 60.
Too easy to raid with sellable gear.
Almost 100% of those servers cannot improvise , and they would better leave something bugged.
Again , almost 100% of those servers focus only on one raid. Yet still not fix it enough.
I would ask you , what would you do to balance cons and pros? And what if a new server would come out which needs your advise to prevent that , what would you say?