the common use case where folks need to INSERT or UPDATE a single row, fast.
This would pull into the persistence.py mechanics to flush just that one object. No collections, no related items. it would skip all of flush(), unitofwork.py and go directly to save_obj, or if the object were marked deleted to delete_obj.
Essentially its what a simple ORM would do with an obj.save() method.
for starters, it would not do any foreign key syncs from a related m2o, that's a UOW function. im sure people will complain soon enough though.