But if your hedons were measured properly, your inability to imagine them now is not an argument. This is Omega we're talking about. Perhaps it will augment your mind to help you reach each doubling. Whatever. It's stipulated in the problem that Omega will double whatever the proper metric is. Futurists should never accept "but I can't imagine that" as an argument.

In ethical and axiological matters, it is an argument.

If Omega alters your mind so that you can experience "doubled utility", and you choose not to identify with the resultant creature, then Omega has killed you.