All of CK2's content in one single chunk? God, no. Do you realise how long that would take to make and how much this massive game would cost? There are games that do this. War in the East, Steel Beasts Pro, and other large titles which cost from $80 to well over $200. Are you sure that is what you want?Preferably, I would like to see updates come without marketing for an other DLC and games to be released in one, single chunk, finished and polished at launch.
And, the arugment of DLC funding updates is NOT legitimate, since one cannot be expected to pay extra for a balanced, finished or fun product
Not to mention that developing the content "organically" over time allows devs to see what works and what doesn't. That's not the case when you have to do everything in one go.
I have no love for putting fixes and other must-have content behind paywalls (looking at you, convoy routing for HoI4), but I'm fine with buying only the portions I actually care about for a PDX game I buy.