About fricking time!
I've really enjoyed 5e the last decade, but that's been a gaping wound in the ruleset. I've played and DMed extensively, and (excluding third party materials) here is an exhaustive list of everything cool I've seen players do with gold:
- Buy plate mail.
That's literally it. Once your tank has plate, gold is useless. A high level player can find a gem worth 100,000 gold and go, "Huh". And that's actually the appropriate reaction, sadly. Not great considering that obtaining gold was literally the entire point of original D&D.
Like everyone else, I've been patching this with 3rd party stuff and homebrew. But it desperately needs to be fixed in the main rules. If they've finally filled that void, that justifies the new DMG by itself.