Went through this list and there is 2 more EIPs currently looking for Champions.
689 - Address Collision of Contract Address Causes Exceptional Halt
1829 - Precompile for Elliptic Curve Linear Combinations
I just submitted to shepherd Blake2b. I would consider shepherding those two a well as long as there is interest. I spend most of my time in the ETH1.X world these days so it wouldn’t be too much for my plate right now.