Animations i suspect had a couple of reasons. One it was done by a subcontracted dev and thus as the dev lost the ability to grind out hours into the project, it was a way to keep production up. For two some people complained that the game is too much jerking it to maths and thus some broader appeal net west cast.this sucks because the game had great potential
i never understood why the dev kept spending energy working on secondary features like the animations instead of just progressing with the story
at the end of the day, the sandbox days and especially the mini events at the beginning of the days are still the coolest part of the game
Personally to me the animations and the various changes of that era were basically there to finish setting up the skeleton of the game, the balance, the visuals etc after which you could bat out story as it comes.
But that's my outside looking in estimate.