1) The plan is to let the charities commission handle that.
2) If an organisation has wholly charitable objects, then it is a charity. If it has a turnover of less than £5000 a year, then it can be an unincorporated charity.

 bagb uses objects similar to, say, the royal society for the prevention of cruelty to animals, then it becomes a subjective opinionof which is more worthy. If what bitcoiners do now shapes the society of the future then an argument can be made that this is more important.