My .02 –
nice thought, I just want to add one point – you said, “Charosses must be of a thick consistency symbolic of the cement we were forced to mix.”
Keep in mind that Tosafos points on ??”? , based on a yerushalmi, that Charosses starts out thick but you need to add wine to it before the tibul (you can’t dip anything into a thick mixture) and this is zecher l’dam (the blood of the Jews). This strengthens Rav Freidlander’s idea of Hashem’s chesed in the midst of our suffering.