OOO very good question! Some depend if its PC version tho, I'll mark them
- Gary definitely admires Stans will and persistence and especially the will to defy certain authorities like his parents (but not in the sense of him being a "rebel" or "bad child", more so that he doesn't let them drag them down and ruin his chances to do something he loves like play music for example or escape the farm) and he definitely admires how he cares so much about saving the earth, animals and such (they'd so go to helping shelters together #bestdateideaever)
- I feel like Stan would admire the amount of love Gary has in his heart if that makes sense, like this boy has so much love to share but (in the start) he can't really let himself because of the church and his family dragging him down (aka being gay ain't okay), but he'll come through in the end ❤ I feel like he also admires just how talented he is (be it sports, singing, instruments)
- (these go for PC) Stan probably likes how good Gary is with children, be it if it's his own or in general, like, he definitely is the best at story telling and entertaining them I swear!! Gary likes Stans love handles, won't elaborate further. Also I like to think Gary has the most adorable smile lines that Stan just adores <33
- omg I also think Stan would adore his laugh idk that's such a cute thought aaaa
- this is very random but I feel like Stan would like how Gary presents/reads stuff to him while making sure he's reading with him, he can tell he got this skill from going door to door sm
I have to stop now or I'll just be going on and on lol

Way too many... I'll just list a few
- I'd imagine they reunite later in life if stuff doesn't work out when they're kids/teens, somewhere in their 30s and up, they'd definitely have wives by then, Gary might even have children, but when they reunite its kinda all over 😭
- I'm a emotionally clingy Stan and physically clingy Gary truther (@/sylphoflights did a good doodle explaining the concept 🙏)
- because of the before mentioned thing I feel like Stan would be anxious about their relationship when they have a small disagreement (which is rare but still) and it's probably because of his parents always arguing, divorcing and marrying again
- garys immense religious guilt isn't going away anytime soon, possibly even after years of dating he'd still have that lingering guilt it's just way too engrained 😢 Stan would definitely help him get through the tough times though, he tries his best to understand and comfort him <3
- if crimson dawn is still a thing Gary would support the shit outta Stan, he may not listen to that kind of music and the church may have said it's from the devil but who gaf his bf is talented and he wants to show him his love!!!!
- old man stary but they have three children Bartholomew, Melena and Gary Harrison the third argue with the wall

I like kyman mostly because of the embarrassnent aspect like imagine being "enemies" your whole childhood and developing feelings for them 😭 and also the way it's lowkey semicanon on cartmans side and how we through that can see his mental state, I think it's very interesting. Like through it you explore so much of their pshycie and realize they litterly can't live without each other and not bc of some grand reason. It also shows how similar they actually are and most people don't want to admit that kyle is anything like eric 😭
Now for stary it's more complex in my head but I love the concept of Gary coming to terms with his identity, feelings and the fact that he was raised in a cult. It's a hard thing to go through (ik from first hand experience) and he's definitely going through shit at first and focusing on helping Stan thus ignoring his own burdens. I also just love them in general it's so hard to describe but they're so complex and so special to me you have no idea

Love this question; he's still poor in this au but it matters less to his character and others insults since everyone is poor here, is a hajduk fan in Zagreb (BIG MISTAKE) and probably gets killed bc of it 😭, can't go to the sea with his family every year since it's becoming more and more expensive but his parents usually let him go with eric or the rest of the gang when his parents can't, tobacco stores are his savoir because they sell cheap candy and other snacks (this is a pre corona and pre euro au...), goes to those werehouses where they sell cheap stuff and toys just so be can buy some dolls for Karen, his favorite ice cream is Njofra and he never buys King ice cream cuz that's wayyy too expensive and not worth 13 kunas