Flat out have never played them. It's like this: if a game doles stuff out to give you a chance to learn new systems or tactics that doesn't bother me. That's normally a single player thing.

In multiplayer I don't like unlocks. And I've always avoided games that seemed like that's what they did. I was really upset about the Star Wars BF game a few years ago. So wanted to play that but I'm not going to put several dozens of hours into a game in order to just play what I want to play.