Not everything can be solved by just hiring more staff.
Even if they did hire more staff that may not change the fact that Extension deletion has a popup that explicitly warns you what will happen if you proceed with deletion, and you went ahead with it. It’s an unfortunate mistake, but one that will likely be irrevocable, so the sooner you create a new Extension and go through review the sooner your Extension will be out there, and if it turns out they can restore your deleted Extension you could just remove the new one from the review queue.