Stocktons got a difficult system with a recycling bag for paper, plastic and cardboard and a box for glass bottles then a green bag for green waste. People want bins but there is a lot of houses that won't have extra space for more recycling bins and the cost is not insignificant for a cash strapped council, but more people would probably recycle if it was easier to do it.
That said I reckon we'd fill a standard bin too easily & we have two of the large sacks out often.
I'd have thought green waste would be slightly revenue generating as surely it's composted commercially?