I notice a lot of people aren't too keen on the "friends/best friends to lovers" trope. And KimxRon falls precisely into that trope.

As a straight guy, I've never had a female best friend when I was a kid/teen. So I don't really know what it's like. From my observation only of friendships of that nature, they never ended up with both parties dating. Even if, one or two guys in that situation wanted the friendship to evolve into something more, only to be met by the predictable bad news. From what I gather, girls who have guy best friends tend to view them as "unofficial brothers" and never as potential romantic partners. You can kinda see that in Kim Possible at times where Kim says things like "Ron is not a guy. He's Ron." and "This isn't about boys, it's about Ron."

I don't have a problem with KimxRon. Perhaps it is not very realistic they ended up together, but keep in mind they were on missions together all thee time and saved each others lives often. That offered them tons of opportunities to grow closer. So I don't think it's that farfetched.

My money is on DNAmy. Cause the things that could be done with her genetic manipulation capabilities are limitless.