Hail teams? Gone. Sandstorm teams? Gone. This thing would mean the end of weather teams, lessening the variation in our Metagame even further.
* Mummy doesn't ruin Hail any more than Tar, likewise for SS and Aboma.
* Air Lock only lasts as long as Mummy is out, so all it means is that wather teams would need a Mummy counter. Not too outrageous imo.
* I would think it diversifies the metagame, as it would be the only answer to Weather that doesn't create a new Weather.
Overall, though, I think we really need to move on. Honestly, Hyra, being a mini-mod comes with a few duties, and I think making gut calls like this is one of them. In my opinion, make a choice, and let's not stall the process.