Unarmed strikes already count as “attacks”, “melee attacks”, and even “melee weapon attacks” as the Sage Advice Compendium, version 2.3, states this on page 11:
For example, an unarmed strike counts as a melee weapon attack, even though the attacker’s body isn’t considered a weapon…
I was wondering if there are unforeseen consequences of letting unarmed strikes simply count as weapons in general.