10. I think I'm fond of "Opposites Attract"! As in two characters that you would not expect to see with each other that have come from different points in life or they're on two opposite sides of a spectrum... Either their race, class, upbringing, etc
But they find common ground in one another and/or end up covering one another's weaknesses and boosting the other's strength. Like the Punk/Prep combo where the Punk is the muscle and outspoken one while the Prep is more smarter, but not good at conveying their ideas
And two characters helping each other through an issue... Maybe they make each other better or they make each other worst (but their bond is still pure(???) and it means something special to them)
One character bringing another to their home/world/planet and they gain a new perspective to seeing how they live... Characters visiting each other is fun and cute to do
12. Meeting new people, getting to explore characters you enjoy more in depth and seeing how they bounce off other characters along with settings... Discovering new canons through the hobby
7. Flexibility and creativity! I play a lot of obscure characters/fandoms, so it's heartwarming when people are willing to bounce off my nobodies and add their own spice to the table
Also a sense of humor is great too... Like if you can play Batman slipping on a banana peel and feel comfortable with the goofy fallout or play out two archenemies awkwardly meeting at a laundromat, then I THINK WE'RE GOOD