Genuinely I don't think there's a product they could announce that I'd be more excited by. Heck, just an Eldraine book. (I think they already confirmed we're getting Lorwyn next year, which is great!) I think WotC is really sleeping on Eldraine's potential as a D&D setting.
I recently ran Waterdeep Dragon Heist set on Ravnica - it went rather well, if I do say so myself. I basically said in my own head that the War of the Spark was not going to happen, and that all the inter-guild tension described in the book was over the missing treasure horde in Dragon Heist. I...