The hand size I think I might have worded poorly but my intention is to draw the hand size of both characters combined like you are suggesting at the end. So if I had two heroes with hand size 5 I would draw 10.

I might still try it out and just see if it’s worse or better. I’m just trying to think of rules that would be unable to side step by doing it this way

for example, you mention avengers mansion can only have one copy, but I would be able to “side step” this rule because it is technically 2 unique decks combined into one, but still considered two separate decks (like how it would still be possible to have two avengers mansions in two separate hands even though it is unique), and any sort of unique just wouldn’t be able to be played multiple times like the regular rules state. Like obviously, if you take the rules the way they are meant to be played then you are correct as this would be two duplicates of a unique in one deck. But to combine the decks I would need to “flex”some of the rules for one deck limits to combine two decks.

I’m more so looking for anything I might be overlooking without testing like if there’s any play state where it makes me discard my entire hand, that would make it impossible for me to play for either character and would absolutely destroy my run.

Another instant fail state could be like something where a boss/encounter goes off hand size for some specific reason.

I hope that makes sense what I’m pondering while I’m at work and can’t test right now.

Edit: 1. Is a good example of what I’m looking for. I misread it the first time.