With the moon now having a definite light source from the side rather than "from the front and maybe just unevenly coloured", I guess it's time to point out a physics derp: If the moon is lit from above the horizon, that means the sun is above the horizon, which in turn means it's day time xP Maybe you could v-flip the moon to make the light be coming from below, to avoid redrawing it?
Your large transition cluster worked well for the low-contrast moon, possibly-front-lit, but it doesn't look quite right with this lighting. The moon has no atmosphere and its surface texture is relatively flat compared to its size, so the light-dark transition is quite quirk, with only some craters to make it softer. Decroded's example has the transition done quite well, while even keeping some dark-side detail (the main problem with it was that the shape of the transition made the Moon look flat compared to yours). I think your super-blue transition cluster should be darkened, and a narrower blue band should be added between it and the lit part. The craters on the lit side should have lower contrast, probably.
A smaller but gentler transition would solve the other problem created by your colour change: the moon is now the most contrasting thing in the image, and completely distracts from the rest of it.
