I don’t know how promising others think this is, but I quite liked Concepts for Decision Making under Severe Uncertainty with Partial Ordinal and Partial Cardinal Preferences. It tries to outline possible decision procedures once you relax some of the subject expected utility theory assumptions you object to. For example, it talks about the possibility of having a credal set of beliefs (if one objects to the idea of assigning a single probability) and then doing maximin on this i.e. selecting the outcome that has the best expected utility according to its least favorable credences.
I don’t know how promising others think this is, but I quite liked Concepts for Decision Making under Severe Uncertainty with Partial Ordinal and Partial Cardinal Preferences. It tries to outline possible decision procedures once you relax some of the subject expected utility theory assumptions you object to. For example, it talks about the possibility of having a credal set of beliefs (if one objects to the idea of assigning a single probability) and then doing maximin on this i.e. selecting the outcome that has the best expected utility according to its least favorable credences.