A bookshelf type doesn't necessarily have to take up counter space. We just finished cabinetry design for new construction kitchen & on attached, marked in red, is lift up cabinet that will hold counter top micro, although could be open - we just happen to be doing integrated so went with it covered. Like your bookcase idea too - if you've got room above though, you could free up that counter spot. . UNTIL RECENTLY, I'd have praised OTR location. We loved convenience as we micro a lot during dinner prep, handy while working below at stove. NOW wouldn't get one again. OTR stand for Oversized Timer / Reminder for us - that's all its good since several months ago when heating element expired. You cant just pop in a new one like buying a replacement counter top micro. When new house micro expire, unplug old, plug in replacement. A reminder that helped us decide against the pricier drawer micro.

What do you mean for "insurance purposes"? Even if you screw something up and burn your house down they still pay. They just cancel you after. As long as you didn't do it on purpose. - Having a hood on with a counter circuit is a violation. - Having the micro/hood on with a counter receptacle is a violation and NOT a good idea. - Removing a counter receptacle and using the circuit for the hood would create a different violation, and is NOT a good idea. Do the right thing and run a new circuit for the micro.

Unless you live in Chicago you don't need conduit. BX is not conduit. It is a type of cable. It can be a standard receptacle.

Maybe I'm not reading it right, but if it is NOT a dedicated circuit then it would also supply lighting units, cord and plug connected utilization equipment not fastened in place, or both, would it not? Which mean the OTR micro would be in violation on this circuit, unless it was less than 10 amps,for a 20 amp circuit, and I have never seen one under 10 amps. It would also mean if it is put on a 15 amp circuit that had other loads on it, it could not exceed 7.5 amps. I don't see how this can be interpreted any other way BUT requiring a dedicated circuit. What am I missing???