What's april 19th?
If you're waiting for something in patch 1.17, you're pretty much suiciding by cop. It's going to be a bust.

More reasonable make or break point would be the new battle system, and then the PVE content that follows shortly thereafter. If they can make battles and raids fun, that proves they have what it takes to fix the classes they're fought with.

If they bumble those, I'll vote no confidence at that point. I'll probably take an extended break until they ask for a subscription, then make the final decision at that time.