i highly doubt YesAsia will get the rights to sell JE con goods.

i think avex is more willing than J&A since avex has offices all over asia. YesAsia is HK-based too, where J&A is Japan-based. but if you do go to Japan, you don't necessarily have to go to the concert to buy con goods, since they're sold outside.
& i think if HYDF is being specifically released in the US, it should be region 1!