Apparently the millions who have chosen to not buy this game, despite previously being customers, disagree with you. When 90% of the people who previously bought from you choose to not buy your next product, that's a problem.
You can want these features in a game. That's perfectly fine. However, when you're dealing with a decades-old franchise with an established fanbase you need to consider what they will accept and what will sell. Civ switching isn't selling. If you have such a problem with Rome existing from 4000 BC to 2000 AD, I think its fair to ask how you were a fan of the franchise at all when that was an aspect of each entry until now.