I have to ask - this story is putting a lot of weight on Christian creation myth being the top guys in YJ - Lucifer, Michael, The God, etc. How does it incorporate other culture creation myths as on the same planet, there are people who know of different Gods with different personalities behind similar and both different concepts. Now in parts it can be explained by people coming up with different names for same God, but in most cases the God described is completely different except their domains. Each pantheon should have Gods on par with Lucifer and Michael and The God.
Also, here is a small complain of what I read in YJ. The people there seem static in their opinions in MC. Alchemist is constantly being there, doing good, helping and throughout the story none of the teens or adults, except for main cast and Captain Marvel, has changed how the view him (maybe Diana, but even then only waaay later). They still view him as that insane wierd guy that they need to be warry off. The best we got is some kind of distant work relationship between him and Batman that didn't really change even with the whole dead parents resurrection for the night thing. Every other hero has respect to each other, but when alchemist has done more good than some of the other heroes (and supported most of the teens emotionally), nothing really changes - people react for chapter or two and go back to old thinking. Only real change comes from canon events and are similar to canon YJ.
This has improved somewhat in TT universe with the teens there actually changing as he helps them, it's just sad to think he will have to go back to the bunch of asshats that are the YJ heroes. Judgements out on Tiffany tho, she keeps switching back and forth. For all the things MC has done for her, it still feels like she has barely changed her opinion of him and constantly regresses towards anger and mistrust. He has helped her more than Batman, but for some reason she only worships Batman's 1 time hug.
Now another small complain - MC has literally infinite time via instant missions. He knows there are holiday missions available (the screw up in ff7 doesn't count). Yet, he keeps saying he is low on time... Do you see the problem here? He can literally jump to another mission in less than a second. Even less if he stops time before clicking accept. He can just spend millions of years outside DC just relaxing.
Final minor complain - stats doesn't matter at all. They stopped mattering when he got 0 mana spell cost trinket. It's annoying that stats go up and have 0 impact on the story. Perks at least do something, but you can replace each stat number with "LoL dunno" and nothing would change.
All in all, besides these complains, I quite enjoyed this story 8.5/10. Thank you for creating this story.