I have a suggestion that you can turn back the Rearm lvl with a new operation that it's like refresher orb. I think it can be a good suggestion that it turns back with this operation. It means that when you use it your lvls are being refreshed, and also with the Aghanim, your items are being refreshed, too. But I think it mustn't be done in the refresher orb ( it mustn't refresh this item) or another items....
please think about my suggestion.
thx alot.