As I’ve said many times, I’m very much against full battletags. It just creates the ability for harassment.
I’m in favor of partial battletags.
It allows us to remove sockpuppeting, but prevents harassment. Everyone wins.
For instance, in that example you posted, it would show “Ayukama#12XXX” instead of 12345. If someone else one day came along that had “Ayukama12XXX” as well, then you would become “Ayukama123XX” and they would become “Ayukama124XX” (assuming 4 was their next digit)
Anyone who is against partial battletags and believes the only true answer is full battletags only wants to harass, and you can’t convince me otherwise.