Honestly, I'm not trying to be nitpicky. But the way you are saying this, everyone will think you are talking about the liquid glycerin. What you intend to drizzle on your soap may
contain glycerin, and it may be a "glycerin M&P base." But is not "M&P glycerin" nor "base glycerin."
To make sure people understand what you mean, it would be better to refer to your drizzle as M&P, or a M&P base.
The other important thing is not to put your soap directly on metal racks, even if they are painted or coated or claim to be stainless. The wires can get cracks or flakes that expose the soap to other metals, and that can cause DOS, which is a form of rancidity. It would be such a shame if your pretty soap went bad! You can put down freezer paper, parchment paper, or shelf liner to separate the soap from the rack.
Anyway, the honey drizzle sounds like it will look really pretty - be sure to post some pictures.