The commonwealth's main purposes are to enhance democracy and economic development. The last big meeting of the commonwealth was held in roanda, whose democracy record is not by any means brilliant. But on the other hand, there are one or two autocracies i can think of, for instance, brunet,. There's still a sort of monarchy, almost absolute monarchy, in suatini, formerly swaziland which still somehow retain membership. So i'd say the qualifications are fairly flexible.