That would be really great! AT on Nxt was discussed long ago (early 2014) and I supported it (still have a big chunk of NxtAT assets  ). AFAIK the Nxt AT project isn't dead - yet, but nobody knows if or when this will be integrated into Nxt. Creating a working ACCT between these three coins would show the Nxt community the real potential behind AT, arousing interest again for a complete AT implementation.

The advantage for Qora and Burst (besides trading them in NXT) would be that you could buy these coins with BTC in two steps using the nxt-based multigateway, fully decentralized!