Even as he frowned at the idea, he gave Megatron a slight incline of the helm in recognition of his understanding. He allowed him to finish without an interrupt

"...perhaps. If only in the worst, most horrible of instances, where there are no other options. Like that frame-thief killing mechs in Kaon or, if the rumors are true, mercy-ending the damaged sparks from a Devourer."

Optimus shuddered slightly, reaction to the terrifying idea of Spark-eaters unfeigned revulsion. Who could not be repulsed by their very existence?

"...So, it isn't something I like to idea of doing, no. But I would be willing to be advised on other possible situations that might merit it."

His grin slowly returned, along with a shrug. "Not that it means advise must be taken, but to have it is an invaluable asset to everyone involved."