Dlc subscription makes for an amazing experience?

Does opening all this in subscription mode Mean all dlc is live making for a pretty epic experience!

Does all dlc have a part to play in this case or is it mostly .... One dlc running or the other ( not mixing it all together)

I want to know If it's it's one or other I may aswell just buy one expansion

I like idea of it all running tho in one gaming experience defo in for sub if that's case.!