Thank you for your ideas...
I ended up adding a tinch more sweetner, like 1 tsp maybe... and just let it be. My sister thought the heat was perfect and for me, well, my entire mouth felt on fire during the meal, but it was actually a pleasant heat.
And the other components of the dish complemented one another SO perfectly, the superheat of the harissa was balanced by the couscous and then the squash mixture I was hesitant just because of the weird seasonings, but it too, was perfect!
I honestly say, I wouldn't change anything at all in the recipe

I really really liked it and will definitely make it many times more... or even just parts of it. **OK no, that's not true, we both thought it would be even more deluxe and beautiful with a bright turmeric coloured sauce squirted across.. maybe using orange juice, turmeric, almond or olive oil and something else...** Otherwise, aesthetically speaking the whole dish was so gorgeous. I wish my photo did it justice, but alas, it does not
The ONLY negative is the TIME FACTOR. I was in the kitchen for pretty much 3+ hours of
hands-on time, not to mention in and out of the dehydrator to check (but I'm also a bit of a perfectionist

)
Here's a photo of the delicious morrocan dinner:
Zucchini and Baby PattyPan Squash with Couscous and Habanero Harissa & Lemon Spiced Pumpkin Seeds