just to muse on while I am thinking about it, it comes to mind to consider pleasures of touch.
You can compare for example warm and cold, rough and smooth. But each of those feelings may be either pleasurable or painful depending on conditions, I would think, and even degrees of smoothness ( for example) are not necessarily more or less pleasing (I would not think).
It may in fact not be possible to do much more than describe types of pleasure and what we feel about them in terms of personal preference at various times, but those descriptions may never translate into any form of "scale of pleasure" in general.
That may or may not be the case, but either way I can see the position we take on that being highly relevant to general discussions about pleasure.
I don't see that discussed very much and I am not sure why. Seems like an important point, even if the point is "it can't be done."