Idk if you're even still doing this but I had an idea so...
Lay can see the future by touching people or objects but the side effect is that he has really bad short-term memory. He sees Suho getting hurt in the future and saves him so Suho decides to repay him by helping him out with his forgetfulness.

something like " I Wish I can cry and tremble and and stick to one of the adults but truth is that you are the adults you are the one to gave power and security to me " idk this been in my mind for a while i

Maybe a different version of Peter Pan or Anastasia (if you know the Movie x'D).. or maybe Alice in Wonderland? Something fairytale like?? I would really love to read something like that ... Oh and of course SuLay if it's okay <'33

or author-nim, to make up for the heartbreaking news between baekhyun and taeyeon. Baekhyun was having such a hard time with the sudden breaking news and suho was with him the entire time. They started developing feelings. And oh wait! Was baekhyun actually gay?! Ohohoho *evil smirks* But, tbh, i'd prefer the first option i had sent. This is to just make my heart at ease *feels stupid*. Idek..

how about a clumsy suho with the grandpa personality(like his real life personality) the other members always ignore him and finally he couldn't stand it anymre and stood up for himself. He began ignoring the others too(like not buying things for them anymre) then, the other members started trying to win him back one by one. I'd prefer a fluff and comedy instead of mature stories. You can do it like this too, while one by one, the members were trying to win him back, he developed a certain feeling for someone(your choice) or no pairings. Just full of fluffs. Ps:it could be a twoshot. Kkkk

DirtyDancing!au. Suho travels to the lake house for the summer with the rest of the family, there he meets the talented and risqué dance instructor that slowly opens him up and teaches him how to be himself, and not the tight- he sometimes acts like. Idk.

chen, lay, or tao

SuChen please! they're the most adorable couple ever. I would say go with domestic or any school au. Like Sunbae/Hoobae thing.

SeHo or SuChen domestic!AU? idk i've been reading lots of domestic stuffs rn lol

Lay or Tao!

21 Jump Street!au. Suho and Lay (or Tao) are undercover at a local high school trying to infiltrate a supposed drug ring before it spreads. Constant bickering about each other's horrible acting ensues until, you know, classy hate- in the boy's restroom.

Bonus* if they end up catching the drug distributor in dumb luck fashion.(I.e. They overhear him talking in the restroom they just had in.)

How about a sulay wolf au where yixing is the demanding alpha and suho is the new omega who happens to catch the alpha's eye?

Ever since their moonlight perf in exo planet, I've been dying for a blonde Suho with tattooes and maybe piercings. I want him to be a CEO of some kinda company and has a dark past/background (your choice) thus the tatts and stuff but has been keeping all these things under wraps. But his new secretary Chen is sharper than he looks and slowly unravels the big boss' secret

SULAY!!!!! I dont really know what it could be but, like maybe just cute date together, like they havent seen each other for a while and just ned to spend some time together

Krisho or Seho! ahahhaa laughing joyfully

So Suho is like obviously overworked (doesn't have to be canon au it can be in a bakery or whatever floats your titanic) and the rest of Exo keeps on taking advantage of him by making him do things for them w/o realizing that he's like about to collapse. And then he like finally collapses from overworking and Kris or Sehun yells at Exo and they all try to do nice things for him before he wakes up. So then Suho wakes up and he's like "i'm never in helping those twats again" but then Exo has this really huge surprise for him and he forgives them :))) is appreciated :D

orrrrr Suho and Kris (or Sehun) dragon where Suho is a really sassy bottom and Kris (or Sehun) has to put him in his place. :D