1: Configurable project folder where all .sublime-project/workspace files are created. Yes we can make st put those files anywhere we want but it would be nice to have st3 do it for us per a configuration.
2: multiple projects open at the same time in the same instance of sublime text. the sidebar could contain both trees and flipping between open projects even without a sidebar would just be “SMOP” (a simple matter of programming :).
The reason for item 2 is because there are numerous times where I need multiple, separate but related projects open at the same time and I really do not like flooding my task bar with multiple instances of the same application.