I'm closer to 3, but I'd prefer I wouldn't obsess over things as much as I tend to sometimes. It ends up being a roadblock to starting many games in my backlog since the thought of 'required' research before playing means getting to the actual fun of playing the game is further away than my motivation might carry me.
I buy most of these types of games release day so research isn't really an option. I'll read as much as I can in the creation menus, but that about it. I mostly want to make sure I pick a class/playstyle that sounds interesting. In single players games that's not too hard. every class tends to be capable. In MMORPGs that's a bigger deal as you can get roped into a support class you don't like. Single player games tend to be so easy these days that its hard to make a bad choice unless you continually make bad decisions the whole game.