It'd be a nice option if the game could be 100% playable in strategic mode only and if that would actually make the game work on lower spec computers. I don't know if that'd be the case, and if nothing else, I would think it should be not officially supported. If the computer is below specs, they can't really be expected to ensure it'll work. And lowering the specs to those needed by strategic-only mode would be confusing and would likely anger the less-informed player that might not realize that they wouldn't be able to play with the standard 3D graphics that have been widely publicized. Honestly, even though I'm pretty disappointed I won't be able to play Civ VI for a while, I don't think this option would convince me to buy the game. I'd still feel like I was missing out on too much of the game experience. But all that said. If it kinda works without much effort, sure, toss that option in as backup that only will be known by people specifically seeking out how to play the game with lower specs in strategic mode.