Gaia

Maybe you can try reading Akikan40's writing for inspiration to write an overpowered but still good MC story. Well, even though most of his stories are about catching Pokemon

Yes, that's right, he Overpowered too fast so if it's not balanced by a strong crisis then this story will end in under 100 chapters at most.

Over time they became more and more like Shirohige's crew

Believe it or not I was with him through an in-depth conversation after a week of approaching through Ta'aruf. In that week I explored his personality through questions, first is do you want this relationship to be limited to dating or do you want a higher level of relationship through marriage? second, do you have any responsibilities in the form of debts, siblings, or gratitude towards your parents? third, what is the salary expectation for your future husband? fourth, if at any time I fall from my current wealth, will you look for another? Fifth, if you are in debt, who will you owe it to? Sixth, will we live in our in-laws' house or rent a house? Seventh, in what year of marriage will we prepare for the needs of the children? Eighth, how many children will we have? Ninth, will we separate our assets or not? Tenth, what do you think about the division of household responsibilities?

Fury

As MC said, he needs power outside of his ring. Moreover, GoU has installed a limiter, a safety switch in the form of an Off button and a danger signal that will activate the Guardian Elite of Green Lantern if Hal does something that endangers GoU. So yes, he needs to create his own ring or at least he can bypass his ring without activating the Guardian Elite's extermination order

Actually, there are many Fanfiction stories from Chinese writers that have quite good story premises. But everything is ruined when they finally get paid for the story with the provision of at least 3 uploads a day and with a certain number of words. They immediately destroy the story they made themselves, this is common. You can even go through 100 chapters and still be relevant to the contents of the previous chapter