Since I hadn't heard anything, I opened a GM ticket today to ask if the account can be used or must it stay idle while awaiting investigation. My concern was that the current queue seems to be 3-4 weeks before an investigation is even started. Combined with the 5-10 days of the investigation itself, that's quite a bit of time. I think it's great that Blizzard is even handling these issues so I'm not complaining. However, there is no promise of restoration so if someone wants to rebuild their account, you could get a lot done in 4-6 weeks versus twiddling your thumbs. Rather than see me just throw in the towel completely, my son offered to grind some honor to replace her gear.
The GM said that if the account was in my possession - not always the case in these situations, it would be fine to work on replacing whatever I could. Again, I was cautioned there were no guarantees of anything being done but I would be contacted one way or the other. That didn't leave me feeling warm and fuzzy but oh well, it's not like it's their fault.
A few hours later I got an email saying that because of the recent increase in account theft, the investigation team was backlogged. Net-net they suggested I go about my business and just make sure that I had enough space in the bank and my bags to receive back the stolen items. If my bags were stolen they would be restored along with the other items. Given that I was left with nothing, I have no issues with bank space.
No time line. No promises. I'll be contacted either way. Life moves on.