it's the fact once you're a blob the game becomes an exercise in tedious frustration that is the problem because there is absolutely nothing to do other than... conquest?
This, so much. Outside of war, there is virtually NOTHING to do unless you create sweeping narratives as you watch your game in idleness. People like to tell others they're playing it wrong, and should be trading, colonizing, and other goodies instead of waging war; which equates to, "Click where the merchant goes. YAY TRADING", "Click where the colonist goes. YAY COLONIZING!", "Click to send diplomat. YAY DIPLOMACY", and then you're back to sitting around idle, hoping for something to do. Apparently wanting to wage war, arguably the one fleshed out mechanic, is not the "proper forum approved" way to play, and all the new game mechanics exist solely to frustrate the player, because apparently there were elements of the EU3 community that WERE FURIOUS THAT PEOPLE PULLED OFF CRAZY WC STUNTS IN THEIR SINGLEPLAYER GAME. They were so mad about what people did with their single player games, they want us to forget EU wasn't always about sitting-there-staring-at-the-screen-hoping-for-a-resource-to-click-and-use (the aforementioned LOVELY interwar game), while patronizing players who were used to/enjoyed the way Paradoxes flagship title used to play just one iteration ago.