I made the mistake of thinking this was a "choose your path" kind of scenario with different endings and went for all the paths I thought were right, but I missed out on most of those failure timelines =(
Except the last one. Hathor's pleading convinced me to try to end the cycle, but the universe went to s'pht anyway because the alien god under the yucatan was left unchecked. Seeing that and starting back felt so right, I think having an awareness that the rest of the bad paths send you back as well would ruin the climactic feeling of it.
I wanna do some of those failure timelines whenever we ToD Eternal. (Also, I kept silent on this for months, but I started working on sprites of the PiD monsters and their projectiles to give them full angles on every frame. It was started months ago, and I gave up in the middle of the nightmare, but if I get motivated again, perhaps we can add them to Eternal.)