I also read Beast's wikipedia page and I thought it was pretty unusual for a mutant origin. Now I think that maybe they(writers) just didn't have all the kinks worked out about how they were gonna handle things, but: Hank was born unusual (disproportional hands, feet, smart) due to his dad's having been exposed to radiation. I didn't catch or they didn't say whether he was stronger or more agile than other toddlers.
He was also missing that 'stress moment' during puberty that would seem to trigger x factor/x gene whatever we call it now. Was the whole pubescent stress thing cannon, or was it just how some people manifested? Jean saves her friend from a car wreck, anybody have a better handle on this? I guess I'm fuzzy on actual first use of power type origins right now.
Oh, and this reminds me, is Nightcrawler even a mutant? He's born blue and furry, right? But teleportation doesn't manifest til later. IDK.
This was the world that I had created. I know what I have to do to fix it...to make things right. There's no problem that can't be solved.