One unique benefit to mrc's new drag-and-drop m-Painter feature and n-tier flexibility, is that it's easy to quickly change the look, and often breathe new life (as user applications) into old applications.
Above is the exact same application with 3 different looks. (You can click on them to see a larger version.)
1) The first app, on the top left, helps you drill down to the customer you are looking for by a number of criteria.
2) The second app also helps you filter by criteria to find the customer you are seeking. There are some navigation changes, and the links are icons. Overall look and feel is different.
3) The third application includes more intuitive navigation along the left side, and the icon of the m-Power bar links to a maintainance application to allow outside users to update their information in one step.