[quote]Maybe I just roleplay weird.[/quote]

Yeah well who doesn't?

[quote]Character sheets ruin the immersion for me. I don't want to know everything there is to know about your character before we start, especially things like backstory, abilities, etc. My character won't know that immediately upon meeting you, and I don't want to either. It's an immersion thing, the furthest I'd be willing to go is appearance beforehand.[/quote]

In theory, this makes sense. Not knowing IRL makes writing easier because it feels more natural to know as little or as much as your character does. But the problem with that is that other people do not necessarily have the same standards as you. It is easy to end up RPing with someone who could be far too powerful or using completely different rules. It can lead to massive balance issues. Sure it's not as easy to RP knowing the full story about a character, but that's why we have "In Character" and "Out of Character." Being able to roleplay a character who doesn't know something that you do is just part of the challenge of a good roleplay, and knowing the full loadout of the other characters is critical to avoiding problems down the line.

Sure, you could choose to obscure some parts with Hiders, but as GM you should be sure everyone is on the same page when the RP starts.

[quote]And when I say crazy long, I just mean I don't want to type pages worth of roleplay. Maybe 4-5 paragraphs tops?[/quote]

So, Advanced or Casual. Probably High Casual (i.e. Casual, but with higher standards).