Clearly, this requirement seemed quite unreasonable at first glance.
Couldn't they just nail down the entire world background from the start? Why would they need to randomly modify it during the subsequent development process?
Lilith was busy with a lot of things in Hell, so it was unlikely for her to watch over the project every day. Moreover, since she only came in at night, it wasn't feasible to ask Nitiandang's employees to work overtime daily, which could easily lead to oversights concerning the daytime work.
According to the previous development process, the game plan was thoroughly settled from the beginning and no further modifications were made afterward.
That way, even if Lilith didn't monitor the development progress, it wouldn't deviate too much from her original design.
As for the occasional bugs... those could be chalked up to accidents, but at least they seemed to be just bugs.