Crusader kings 2 is probably in the home strech, I guess we might see some chinese lag gig if we are lucky, but that would be a lot of work so I am not counting on too much, but as Johan said about, it all depends on how much people buy.
Meiou taxes is like the first experience of eu4 on sterioids. I personally believe that once Meiou and taxes 2.0 is released, EU4 will see it's playerbase explode.