Just noting a few commands are no longer in RST. Big deal? I don’t know but that isn’t typically what software is supposed to do…least not CAD software.
Tools-Split Walls with Gap (formally turned on with an INI switch)
A whole group of commands related to views…gone. Now the word is you can use the view cube. But that doesn’t make it a great replacement for a shortcut.
View-Orient-To Other View
Know of more? I have not finished my own look so there may be more, send me comment so I can update this list.