We've only seen a fraction of the game's content so far, and everything that they have shown us is an improvement over EU Rome.
Some people seem to expect all the technical military details of a pure wargame like Total War or Field of Glory. Imperator is not a pure wargame and there has never been any reason to believe it would be.
Some people seem to want all the economic and demographic detail of a pure city-builder. Again, I'm not sure where the expectation that I:R would be that type of game is coming from.
Some also seem to expect a richly-detailed, highly-accurate political simulator that precisely models the number, term limits, seniority, and career paths of every Roman magistracy, and are angry that instead we seem to be getting more modular government forms suitable for many different tags instead of the Roman Republic simulator of their dreams. Again, I refer you back to EU:R.
The problem is that y'all are not basing your expectations off of I:R's predecessor or even off of PDS games in general. You each have a Rome-themed game of your dreams sealed deep in your heart of hearts, and you have an utterly unrealistic hope that a small Swedish developer will fulfill your most specific personal desires.
Paradox gamers are funny. They take games that need dozens of hours to learn, that they play for hundreds of hours, and they say "Oversimplified and dumbed down. No replayability value."
^This guy gets it. We'll have people put 400+ hours into a game and then come over to the forums to decry it as "unplayable" without a hint of irony. Apparently it was playable enough to warrant literally weeks of your time.