I'm not looking to break backwards compatibility. I just want improvements and things fixed that don't work well. There's no shortage of those. In replication, tooling has barely advanced, and robustness-wise, it's barely moved. Certainly in other areas tooling could be improved.

However let me also comment on Oracle. They are very backwards compatible. They also suffer security issues because of this. I'm not sure I want complete backwards compatibility. In fact, I like the move from mirroring to AO/AG. While I like mirroring and I think AO/AGs need some work, I am also glad they didn't try to retrofit this and made a new technology.