Here is how I would define axiological hedonism:
- Suffering, i.e. any negatively valenced experience, has intrinsic disvalue.
- Pleasure, i.e. any positively valenced experience, has intrinsic value.
- Nothing else has intrinsic value or disvalue.
The core of my take on axiology is that something has intrinsic (dis)value if and only if it literally is valuable. Intuitions are not evidence for intrinsic value.
I am convinced that suffering (and pleasure) fit this criterion. The disvalue of suffering is self-evident from introspection, i.e. from observing how suffering feels. The disvalue is inherent in the experience; it is not a matter of an evaluation done by me, or a desire for the suffering to stop felt by me (even though there is a strong correlation), or me having a certain attitude towards suffering.
That being said, I think a subjective judgment cannot be avoided when it comes to comparison of (different kinds of) suffering and pleasure. In the words of John Stuart Mill:
Neither pains nor pleasures are homogeneous, and pain is always heterogeneous with pleasure. What is there to decide whether a particular pleasure is worth purchasing at the cost of a particular pain, except the feelings and judgment of the experienced? (What Utilitarianism Is)
An experience does not inherently carry information about its commensurability with other experiences, but it does carry the basic information that its value is positive or negative. The basic variant of axiological hedonism is only concerned with the latter.
When you perceive a color, is it not self-evident that the color "looks" a certain way? There is no one doing the looking; it just looks. Color and disvalue are properties of conscious experience, and they are real parts of the world. I would say our subjective experience is in fact the "realest" part of the world because there can be no doubt about its existence, whereas we cannot ever be sure what is really "out there" that we are interpreting.
If no property of (dis)value existed and couldn't ever exist, then I think it would make no difference at all which outcome is brought about. I could just go chop my arm off and it wouldn't matter. The fact that I wouldn't want to do this would be irrelevant, because the wanting wouldn't by itself translate into any value. "I" am just a flow or sequence of experiences, and wanting is just a kind of experience with no intrinsic value.
The motivational salience you speak of in one of your posts may be a necessary condition for suffering (in humans), but the disvalue is exclusively in the distinct way the experience feels.