^This. I feel like a CS is just a skeleton that you submit for your own reference, the reference of the GMs (which is also you) and as a quick guide for someone who is interacting with your character. There's no pressure to craft a master history or some grand tale, and 90% of the time anybody even looks at your sheet beyond the first time, all that wall of info is just gonna be glossed over or worse, it could even get in the way. A cool CS is cool (by definition) but I know I personally would like to actually read a post or two by you rather than just a reference for what your posts [i]could be[/i] y'know? :p

And if your plot notes and stuff haven't stuck in your head and you don't remember them in full, maybe it's a good idea to reinvent them anyway. Consider it an opportunity :D