This tedious work (of the helper procs and datamodel generation code) was the reason why we created the package-builder at one time. It is far from perfect and probably the other approach taken with UML is considerably better, but maybe someone is willing to invest some time into improving either one to make code generation considerably simpler. If you have all the code for your add/edit/display/list of "objects" ready at hand, then you could (quickly) modify it to suit your needs.
