Taken to an extreme, moral relativism would tend to require extreme accountability to oneself (our "highest self" or whatever is equivalent in your belief system), otherwise it inevitably becomes a tool for justification of self interest.
But the accountability to self requires some absolutes. I believe in 2, and one is arguably a corollary of the other. English does not have a word to describe the first, but at its most pure, the best description I can conjure is unfathomable grace. Agape, one of the Greek expressions of love, is probably close. Divine love for those who view this through a religious lens. This grace has unconditional reverence for all creation (including Self) without judgment or attachment. I believe all humans, regardless of culture or background or belief system, are capable of brief moments of this when they are at their best. Most of us, including me, fail 99.9999% of the time, but that is the entire point, otherwise we would not have the human experience. Why am I here? To live a human experience. I think the virtues most of us recognize are just expressions of this grace contextualized through human experience. It nearly always has to catch a ride on something familiar for us to recognize it. And then all of those virtues can be perverted when one spends too much time on the context or dogma and not the intention behind it.
And that leads to the 2nd absolute, which is free will. I do not believe this exists in a vacuum, but on a continuum from a simple organism behaving according to its programming (like a bacterium), to humans, which are furthest along on that continuum. Humans possess the ability to observe ourselves and choose/evaluate/discern more than any other species. But the aforementioned failure rate (despite knowing better a lot of the time) creates evolution and infinite perspective, and it is from those infinite perspectives that destroys the universality of most (all but 2) moral judgments.
I believe a community of humans living according to these 2 absolutes, with superhuman accountability to themselves, would create utopia, and that utopia would be expressed arbitrarily through whatever culture they happen to share or create. But unfortunately (or fortunately?), the practical requirements of life get in the way, so the ability to sustain an existence of unfathomable grace is.....difficult.
This is my worldview based on my own biased perspective and I don't expect anyone to agree.
Or, Dickbutt.