Hi
it sounds like you need more of a balanced deployment scenario. currently, i guess you have loads of smallish printers, cupboards of toner etc... and want to get away from that.. but it also sounds like reducing to just a few is going to cause you a headache and possibly bring user dissatisfaction. what you probably need is some larger devices for common use, and for harder to place areas - or where there is a disparate placing of people, you need some smaller devices to service them as well. (finance being a prime example. ) this can be done quite easily and still with a managed service to get away from where you are now, with them taking time and money from you.
hope that helps some ?