Rebuilding a weaker single-use court system : If a Dapp recreates a system where a few randomly selected token holders vote, then they will basically have to recreate a version of a dedicated arbitration system such as Kleros Courts - except that if it is the only utility of their token, then it won't benefit from network effects that Kleros has, where combining a lot of use cases together gives the token enough value to resist 51% attacks. Moreover, If they tack Kleros-like features onto a token that does something else/has value for some other reason, they will not have any guarantee that the culture around their token will develop appropriately so that people reliably stake so that their court can have good resistance to those same 51% attacks.