[_throwawayyyyyy]

no way. you'll take someone who is a great individual contributor and find they're a terrible manager since they want to turn everyone else into _themselves_.

if you're going to promote from within, please send them to a course or something. get them some real training first or you'll have a predictable outcome.

having someone cut their teeth on you as their first management position is BS and the rest of the team will probably resent your new 'hire'

[zo1]

That's a good chunk of the role and why they got "promoted" though! You want more such cogs, so naturally you expect them to make others into similar-behaving cogs. Otherwise they're just "admin" and you might as well automate-them away with tools and processes.