This will most likely not happen, sorry. PM has pretty much rejected increasing the character limit on ordinary posts, so I have trouble seeing him increase it for user pages since they matter much less.
Honestly if you're passing the 8,000 limit, you're clearly writing too much as MrK mentioned. Looking through your page, I see random teams, text art, friend lists etc. that it wouldn't kill you to remove. You can have friends without making an endless list of them, and you can probably keep minor achievements like breaking another hundred points to yourself.
Just keep it simple, you don't need to write an essay about yourself. That's not the point of those pages.