Better flavor? Maybe. But more work. Also adding fat and seasoning into the mix after microwaving accomplishes similar results, because you are then going to bake the entire mess. You could also roast the cauliflower and food process it. But then you are getting different texture results.
The kugel ended up not being that popular at Passover with Rachel's extended family when other starchy things were available, so it was kind of disappointing. We ended up bringing 80 percent of it home. So we mixed up the remainder with parmesan cheese and bacon fat and fried it as "latkes" in a pan. I probably have 4 or 5 portions of "batter" left in the freezer.
So screw the kugel. Make latkes