Surely you only need a sniffer if you're trying to set up a local display instead of relying on a cloud-hosted service that gets data directly?
I dislike the WH1080 console and rarely look at it. For me, its real value when working is not as a display but to buffer data in the event of power outages--not uncommon in the winter. One of my wishlist items / plans is to set up a "magic mirror" display (
https://github.com/MichMich/MagicMirror) with a Pi, perhaps a Pi Zero with wi-fi, with the weather as one of the display items. In the short term, however, I'm keen to have a simple console (black and white is fine) that buffers data. In terms of added features over the WH1080 I'd like a solar/rechargeable instrument unit with solar/UV, perhaps one or two optional extra remote temperature units. But most of all I'd like reliability! After that I think I'd like component level replaceability (instruments & console). My impression is that the market for things that work on 433MHz is a bit hit or miss in terms of compatibility :-(