Myself and many others are dreading the arrival of a content finder. Being forced to use a system because its the easy route which majority will take, reducing servers to barren dead wastelands where everyone just afk in town while in que.
Migth as well play a single player game since any interaction with other players is moot and once grouped up with randoms inside the dungeon you'd be lucky if anyone responds to a "Hello", social ethics and bahviour goes out the window for many players when you are grouped up with complete strangers who you are unlikely to ever see again.

If this is the route they plan to take, they might just as well remove any open world zones and replace it with lobbies and hubs and get pretty much the same result.
So I'm against cross server content finder, todays MMOs feels lifeless enough as is, we don't need even more reasons for players to become asocial and foster the forever alone guy soloing mentality, and this is any loot issues put aside.