I know it's a buisness, and you need money. But....
Disappointed with your post!
Why is dev time being spent making new saleable content for a game that doesnt work quite right.
They have multiple teams. If they fixed every issue in the game, then started on DLC, people would complain that there was no DLC at all for 6 months. Plus, the game is getting better all the time, and it's certain there will be another patch (1.4) before the DLC is out (it will be required to enable the features in the DLC, as per CK2.)
Do you expect people to actually buy it, when simple bugs like scroll bars or disappearing previously payed for DLC isnt fixed?
They were fixed today, and yes they do expect people to - because they will.
Sounds an awful lot like RomeII tactics to me. Make a shitty game with zero features, then try to sell those 'features' later, even when you cant be bothered to fix basic coding errors. I am not saying EU4 is RomeII bad... just saying that is what you want to avoid looking like.
Don't know anything about Rome2, but you know better than most that the part I bolded is just about as far away from a description of EU4 as it's possible to get.
I understand there's issues in EU4, we all do. But criticising so harshly a game you've played practically like a full time job for weeks on end seems extremely odd. Especially when the DLC will add so much more depth (to a game already full of depth, as your own extensive playthroughs attest), as this one sounds like it definitely will.