I try to approach Pascal's Wager differently.
I start with the question, what is the maximal good action or course of action we can take? When we go down that route, it seems that a maximally good action that could be performed by a human being has 5 separate properties: (1) maximal length of the impact, (2) maximal impact on the human being performing the action, (3) impact on a maximal amount of people, (4) maximal impact on nature, and obviously (5) is morally good.
We could debate on whether these properties are what fill the criteria of utility, but (5) seems to be the only objectionable one. (5) also includes various considerations such as the intention, conscience, and circumstances of the person performing the action.
When we get these 5 properties of the goodness of the maximally good, we can ask what the maximal action is.
This will depend on your worldview, but a religious person who believes in an eternal afterlife would have the upper hand here, as choosing the eternal, blissful, and wonderful afterlife satisfies these conditions better than choosing the maximally great action in an atheistic worldview.
However, it also seems ethically intuitive that in situations where the potential utility of doing an action is proportionally greater than the potential utility of refraining from the action, we are called to perform the proportionally greater action. Some may object by saying that there isn't a way to measure the utility of an action, but I just offered 4 categories that would measure the utility of the action. (5) is a yes or no option, so that must be fulfilled for an action to have utility. Exclude the maximal qualifiers of each, and the listed qualities are suitable for ways of measuring utility.
Some may object and say that splitting utility up into categories doesn't answer that question. These categories of utility are qualitative, not quantitative, so we can approach debates on the utility of actions through asking how actions must fulfill this criteria. To strengthen the possibility of measuring utility, we could add a fifth category--"The action must fill categories (1)-(4) greater than rival actions to be considered of better utility."
Although we may not be able to quantify these categories, it seems plausible that utility can be measurable.
Now, how can we decipher what the action with the most utility could be? This comes down to an epistemological consideration. One could say that being an atheist could fulfill those categories, but they would have a hard time doing so. Here, various arguments for and against different worldviews need to be brought up. Recall that (5) requires that the action be moral, which includes the intention of the person acting. The utility of an action also must here be distinguished between believed utility and actual utility. The actual utility is what we hope to achieve when performing the believed utility. The believed utility may or may not be greater than the actual utility, in that we identify the wrong action of greatest utility, believe the action to have different levels of fulfillment of the actual criteria of the action, or conjoin those two. We cannot guarantee what the actual utility is, but we can aspire to achieve acting for the greatest actual utility. This requires us to be epistemologically honest with what is the greatest possible action, as we must perform the greatest believed utility action. To rationally believe something requires justification. Simply saying "Action x could bring maximal utility," is not sufficient. One would need to provide a justification for that statement that surpasses the justification of, say, Action y.
From here, we can consider various hypotheses on what the greatest action of utility could be. Put forth your own!
(I'll be coming back to edit this, but I already recognize one thing that must be explained further - Should we perform actions that give more utility even though they may seem irrational? I have a deeper understanding of this question, but I do not have enough time tonight to finish my response to that. Let me just say for now that the answer is not yes or no.)