-a is out of the question for me, it's far too slow for the amount that I'm filtering (and I'm doing it quite often).
Zero padding as I have it currently is ok because they only need to be padded once when a number is added, and unpadding is a matter of using a $calc on it, but it's still a workaround for something that could be improved imo. As you might have guessed, this is for a database of player's statistics, which need to be easily filtered to create top statistics.
I wish I had reported this earlier (on 6.14 I already noticed this), though I totally forgot about it.