That's right, the game will be good, but after how long ?!The issue with releasing unfinished games is that by the time Paradox puts in the time to fix things and build up on the game, however good the game becomes, people are simply no longer interested and sales of further DLC remain lackluster, so whatever potential the game had is wasted and developers and publisher move on to something else.
The future of this game will depend a lot on the dlc. If the first dlc comes out in a year it will be too late. They have to fix the bugs and with a quick dlc revive the game. Basically I have to be very quick to release content.