I may have a defunct understanding of deontological ethics, but for some reason it seems to me that deontological ethics ultimately reduce to consequentialist theories. Take, for instance, Kant's Categorical Imperative, "act only according to that maxim whereby you can, at the same time, will that it should become a universal law."
When it comes to defining the "maxim" that one can imagine as becoming "universal law", would it not be ultimately defined by an awareness of consequences? Murder, for example, is wrong according to Kant precisely because universalized it would create an unliveable society. But to assert this Kant has to assume the liveability of society as an end goal, no? From here, actions that have consequences that do not promote well-being (another way of saying liveability of society) are precisely the actions that would be prohibited by the Categorical Imperative, and so the Categorical Imperative would be based ultimately on a consideration of consequences. Basically, his rule sounds like Rule Utilitarianism.
Another way of formulating deontological ethics that I've heard is in terms of intentions rather than consequences. The moral status of actions, from this viewpoint, is defined by intentions and not consequences. But even here it seems to be that a moral evaluation of intentions still reduces to consequences. For instance, the intent to murder someone is wrong, but really only because that intention should naturally produce negative consequences (the intention to hurt someone is bad because its application would hurt someone).
So, what am I misunderstanding? I feel like morality must take consequences of actions into consideration at some point and it is clear to me that well-being must be inextricable from any moral theory.