I hit a (short) window of decent seeing eventually. Just average, but with splits seconds of good definition, and I was able to enjoy again the unfiltered view of the planet. Hellas looked quite interesting, the E part was the usual orange (lighter than in the drawin), than a white patch in the middle, and then the light blue haze that stretched all along the terminator.
At 700x contrasts were much diluted overall, but I could spot easily details that I missed entirely at 525x like the Anian/Morpheos Lacus complex (if the identification is correct). Even NPH appeared much better defined as a thin white strip along the northeastern limb. It was still brighter than anything in the S hemisphere, though this is not obvious from the drawing. David Gray spotted what could be the dark edge of the cap recently, but perhaps it's beyond the reach of my 10" newton, or the seeing was not good enough.