Any thoughts about what should be included? What should not be included?
as soon as you start laying down rules about what should and shouldn't be included. you go against freedoms.
it should be an unwritten rule, more of a moral guidelines.
EG as soon as you say people have the right to own bitcoins. this can be abused to say that stealing someone elses coins is ok, thus they now have coins they have a right to own.
much like having the right to healthcare, they feel they don't have to work for it or pay government taxes, they just feel like its a birthright to not contribute to government funded schemes, yet grab the benefits.
this is the mentality that thieves that are starving feel they have the right to steal food purely on the presumption that they have the right to live and the right to feed their children. not thinking about getting a job to earn funds.
although a bitcoin charter, wont truly become legal rights to then be abused, i just used the examples above to show how people treat their 'RIGHTS'