Game is clearly dumbed down. Granted TW was always dumbed down outside the combat.
Dumbed down in what way? You're referring to the lack of a tax slider, governors, family tree, sanitation, food production, provincial improvements (roads and so on), that sort of thing?
So, you admit that TW was "always dumbed down outside the combat," are mad that the campaign has been dumbed down further, but refuse to give the game any credit for new features or for the combat—which arguably is well done, diverse, and enjoyable, while the AI and collisions are substantially and very noticeably improved. Hell, so is the performance. Those were actually the big three complaints about recent TW games: AI's dumb, collisions suck, performance is shit.
Presumably the reason they altered sieges was to make them easier for the AI to handle properly, and I think that's an understandable choice. If the more elaborate, open siege maps were still in, people would be bitching about the retarded AI instead. It's a lot easier to redesign a map and tweak some mechanics than to redesign the AI, and there's a limit to what game AIs can be made capable of.
Sounds to me like you're the one with shitty opinions. It's a shame those additional details are missing from the campaign (although the absence of some is clearly appropriate for a Warhammer game), especially the tax slider, but most were no more than braindead fluff to begin with. Many of them were just mindless button-clicks, only managed very occasionally, or else were dead easy to manage.
You think that managing shitters and the option to marry your daughter to some asshole to get +1 diplomatic relations is more important than focusing on magic spells, monsters, flying units, magic armor and swords and shit in a Warhammer game? Come on, man.