Since Xoops project at SF.net is open again to development and community contributions, maybe the new core team will fix it and reduce the gap with XC Legacy.

For us, end users, Altsys is a good example that has an option to allow Xoops2 users to change the 'admin menu' alike XOOPS Cube Legacy. Give it a try!

Finally, Altsys and Protector are not so difficult to install. For a new 'xoops experience', test other D3 modules, compatible with both versions : old and new !

Have Fun !