Making the players do drudge work for no other reason than to make them do drudge work is less than ideal. In fact, it's crappy.
There are some cases where we want to give players things to do. These are typically in cases where things will happen anyway, but player involvement can make it better or faster. i.e. you don't *have* to have courtiers. If you don't have them, you can drop taxes a bit, and keep right on going without a problem. But if you want the absolute most out of your region, or you don't want to wait for the region to recover on its own, then do some courtier work. The involvement of the player just makes it more efficient and faster.
Changing taxes to manual collection really gives us nothing. Instead, it forces a particular player to do something on a regular schedule in order to achieve the exact same things that the completely automated system already does. It also is probably against the IRs about activity/inactivity and playing at your own pace.
I think this would be a huge step backward that really doesn't add anything at all.
