Not a DM, not yet anyway. But this is a solid idea. As a player since I make my character sheets both physically and also on DnDBeyond, I've been linking a read-only version of the sheet to DM's so they can go over what I have. It's a helpful addition they recently added.
Even before that however I've always tried to follow that rule, even when my barbarian was only Level 5 I felt like mentioning that I've got a Dwarven Thrower was important.