Omg… Doesn't this go against every privacy best practice we have been trying to teach users for years? Address reuse is bad. Reusing an address that is at the same time your identity is even worse. It might still be useful if you want to be open about how much money your public key holds and you’re fine with exposing any movement of that money, but the trade‑offs are too much, imho. Another downside is that it makes targeted attacks on users more attractive, maybe your public key holds enough BTC for someone to justify an attack on you... No bueno