What about adding something like #maReadDepth or #maReadStrategy to Object class? I just thinking, that it's easier to define a read strategy on a per class/instance basis, rather than defining a single global read strategy in one step.

Is it possible to drive the DB model by defining read strategies in such way? The implementation is seem simple: after reifying proxy send #maReadDepth(or whatever) to reified instance and continue with reification if needed so.