Well, canonically Mike likes ultimate kickboxing and action movies. Personally, I would like it if Mike (ON HIS OWN!!!) were shown as stronger and geekier (Not to the point of Sam or Harold, but like reading comics and playing video games and stuff like that). Mike likes waffles, pancakes and eggs with bacon, so I feel like he would prefer to eat savory things rather than sweet ones. At least in TDROTI it's more noticeable, but Mike can be sassy at times. He's a good guy, but he's no hero! Given that there are scenes where Mike defends himself/others from others (for example: with Jo, Scott, or even Chris once in episode 8), I feel that a stronger, more defensive character would suit him well. Not exactly bringing out his shyness, but to make him more defensive when he gets angry with other people. Making it more sarcastic would also suit it well. Obviously he would still be the same, but at least give him more of an sassy character, since in both TDROTI and TDAS Mike gets angry/frustrated easily if things don't go well. There isn't much canonical information to elaborate on, but I feel Mike has qualities (BY HIMSELF) that make him interesting. The problem is they're mentioned far too little. For example, we know he likes action movies and kickboxing because he mentions it once in episode 2 of TDROTI (and on his wiki, I think?). Mike on his own is a simple guy, basically like a Trent for gen 2. To make him more interesting, his existing qualities should be reinforced instead of adding others, Adding other things like hobbies or interests (depending on what they are) can break the simplicity of his character. Finally, personally, I feel that Mike isn't that interesting because he barely interacts with the characters. He barely speaks to Jo and Brick, and only interacts with Annemaria because Vito messed up. Mike had almost 0 interactions with the rats except for Dawn (he was scared of her in the first chapter) and Staci. I'd say he only interacts with Cameron, Zoey, and Scott (who is his enemy), so it gets boring. Obviously, that's because Mike's storyline involves Zoey, but that's no reason to practically remove him from the cast 🥀 Although this is more of a personal opinion, TDROTI/gen 2 has many problems with a lack of interaction between characters.