Before playing, I thought I'd read the comments. Scrolling back up to the gamescreen and seeing that the first page is King of Tomagar saying "Loyal subjects, we are facing an economic crisis unlike any we have faced before" made me laugh :D
There should be a badge for when you time it so then you get all 4 endings happening on one day - I just missed the 'take all the city blocks' by 3 days...
In the larger shops, arranging the racks so the customers have to zigzag to get to the till helps (kinda like the way you zigzag the routes of the creepers with the towers in those TD games). Also, keeping the prices of the CDs at $17,50 every day keeps your karma up.
This is one of those Marmite games, isn't it? You either love it or hate it...
(I don't think many people outside of Britain will have any idea what I'm going on about)