BookBarbarian
Expert Long Rester
Sounds like its a good ruleset if the main issue with it is managing player expectations.
Also, thanks.
Thanks to [MENTION=1]Morrus[/MENTION] and [MENTION=6802553]BookBarbarian[/MENTION] for the comments. I'll have to read the AiME books, and see how I feel... see whether I think low-magic can be done in 5e at all. High magic certainly does seem baked in by default, and that may be quite difficult to overcome for people who want "D&D". If it is as much about expectations as anything else, perhaps that is manageable. Otherwise, perhaps I'll look into TOR. I've learned from experience with Cypher System that getting a group into a whole new ruleset can be a lot more work than I may want to deal with, so I'd prefer 5e AiME if possible.
To sum up. I think if you want the granularity of 5e Combat without the 5e spellcasting system I think AiME in general is a good example of how to do it.