BenzComander - Thanks for your comments.
I'm not SAP's greatest fan either!!
I think what I'm really grappling with is finding the best way of documenting and sharing the task list you mention. For our people to move away from their current processes - that have evolved differently in different parts of the business - and move towards a single and consistent set of processes, we need to make sure that the new way makes sense, and is easy for them to refer to. Making it accessible and easy to use will be the challenge though given the number of processes involved.