Do you plan to develop any kind of Spring Roo integration, an option for using Spring Roo entities for accessing data instead of WM-generated entities?
I would expect simply something like a Live Variable (or a special type of Live Variable) that would be able to use Spring Roo entities in addition to/instead of WM-designed entities.
New Spring Roo version 1.2.0 allows to automatically generate services or repositories to access Roo entities with a simple command.
It seems that it would not be very difficult for your team to create a Roo plugin (based on that version code) to create a similar "service" but with the structure that WM requires.
Please, see this link with an explanation and an example: