@nathan-at-least brought this to my attention and asked that I follow-up here.
I love the idea and look forward to seeing the uptake! We stopped proactively reaching out to exchanges about UA adoption shortly after the sandblasting attack as it effectively shut down the wallets that had made UAs available.
We have strong relationships across the ecosystem of major exchanges, and it is our intent to re-initiate those conversations once ECC releases a new SDK and broader wallet UA support is available. @Beth is on point for our team, and we’ll be sure to highlight this opportunity and we start to re-engage in conversations.