Of those, I think I would vote for one of the fractional-Kelly ones—providing arguments for something (fractional Kelly) rather than merely against naive Kelly. (Suppose I think one should “Kelly bet on everything”, and you write an article saying that Kelly is too volatile, and I read it and am convinced. Now I know that what I’ve been doing is wrong, but I don’t know what I should be doing instead. On the other hand, if instead I read an article saying that fractional Kelly is better in specific circumstances for specific reasons, then it probably also gives some indication of how to choose the fraction one uses, and now I have not merely an awareness that my existing strategy is bad but a concrete better strategy to use in future.)
Of those, I think I would vote for one of the fractional-Kelly ones—providing arguments for something (fractional Kelly) rather than merely against naive Kelly. (Suppose I think one should “Kelly bet on everything”, and you write an article saying that Kelly is too volatile, and I read it and am convinced. Now I know that what I’ve been doing is wrong, but I don’t know what I should be doing instead. On the other hand, if instead I read an article saying that fractional Kelly is better in specific circumstances for specific reasons, then it probably also gives some indication of how to choose the fraction one uses, and now I have not merely an awareness that my existing strategy is bad but a concrete better strategy to use in future.)