I think we can make informed guesses from extant species. Birds don't do this because birds fly and even the ones that don't would still have the mechanism to keep weight off the body by laying eggs at the earliest possible time in the development cycle.
Some clutches have complete mortality.
Does seem sort of suicidal and the species isn't doing to well. So, genetically, these more complex systems do not have to be to be developed while in the egg. It could tell us that bigger eggs are relatively more expensive to make.