A giraffe might seem more efficient with a short neck nerve, but evolution provided no path to enable such a radical mutation, so it has a nerve that goes right down its neck and back up, iirc. Similarly with morality, we may be able to invent a theoretical morality that is ideal, but we have no path to achieve such a morality socially, because it is not grounded in precedent
This is like saying that in order to evolve further, a giraffe must first devolve. Going forward in time, there is no need for the giraffe to pay homage to his evolutionary lineage. The analogy doesn't hold. The giraffe's current form can still be said to be grounded in precedent, because his is a product of precedent, though not needing to devolve in order to move forward.
The great example of a failed moral promise is communism, which presented itself as an ideal morality, but in practice produced terror, stagnation and tyranny. Incremental adaptation from existing moral systems, such as Christianity, should be seen as a more viable method to achieve moral progress than construction of a rational philosophy severed from its context.
Pointing to a failed political system does not mean Christianity or any other religion offers the best alternative, through incremental adaptation or otherwise. This is a false dichotomy of sorts, ignoring the existence of more modern moral systems that have neither the failings of Christianity nor the failings of Communism. The context of such morals systems may be required by the scholars that develop them, but not by the general populace that follows them.
Within the scientific framework, fine-tuning is actually omnipotent and omnipresent and effectively infinite and eternal, traditionally core attributes of God.
You said that if something is not within the finely-tuned laws of physics, it simply will not happen. Therefore fine tuning is omnipresent. But that's a bald assertion that ignores the possibility of a multiverse. How could fine tuning be omnipresent if it isn't realized in all parts of the multiverse? To maintain this position, you need to fully reject the idea of a multiverse. I agree that we may not live in a multiverse, but this position is not the same as saying the multiverse theories are definitely false.
My view is that Christianity is all about how humanity has lost contact with this natural intentional structure of the anthropic direction of reality.
Modern moral systems rest on the axiom that we should promote human flourishing. They are no different from the ideals you champion - the "anthropic direction of reality". If we have lost contact with this wisdom in modern times, we've done so with Christianity as the dominant belief system. Apparently, something isn't working. Forming one more denomination amongst the tens of thousands that already exist will do no good.
But the magical dream of bells and smells transports believers to an imaginary heaven in church, and this perceived psychological benefit of the fantasy of transubstantiation completely outweighs any scientific critique of what is actually happening, when you are inside the faith structure.
Scientific critique understands the benefit of ritual and sanctified belief, as shown in psychology. If you want peaceful minds and healthy psychology, distill what has worked within buddhism, since it is so much more effective at achieving the ends. Secular group meditation and the sanctification of humanity as a whole is a demonstrably suitable replacement for superstitious ritual. Its effects are profound, but it is not popular because it is not as sticky a meme as Christianity. Christianity is sticky for all the wrong reasons, and the sticky parts will cling to whatever denomination you try to create. It's the evolutionary algorithm applied to information. What you hope to achieve won't spread beyond a few people without the unseemly sticky superstitious beliefs that give Christianity its survival power.
My view is that there is a deeply accurate cosmology within Christianity that provides an unconscious driver for its popularity.
In order to be an unconscious driver, the person must first already possess the knowledge within his unconscious. Meaning, something that has already been learned in his or her lifetime. Most people know nothing of the concepts that dwell hidden in Christian texts, so the knowledge can't be unconscious. You first have to understand cosmology, then turn around and study the bible for it to stir up hidden connections. Not only that, but the cosmology must be specifically related to the instances where Christianity may or may not refer to it, which is specialized education.
Deconstructing and analysing this cosmology, for example in the symbolism of the chi rho cross, provides a path to rebase faith in reason.
I don't see how attaching meaning to a symbol is a way to ground anything in reason. Unless it's already universally understood what the symbol means. Take words or math, for example. Unless you hope to re-educate the entire world on what esoteric symbols in Christianity
should mean, you're left with what they
do mean. In other words, what most people take them to mean. See Carrier's chapter on the use of words to see what I mean.