Hello,
When you use
exclusion / disable folder scan , you can exclude Folders/Storage on high or even top levels.
If you don't want to scan for example public folders, you enter "Public Folders" and GeniusConnect stops scan on the top level.
The function you are suggesting (include only....) will not gain any performance.
Example Include only: SomeContactFolder
GeniusConnect must scan everything since there is no way to know where the "SomeContactFolder" folder can be.
Can you discribe your folder structure, maybe we can find some other/better solution.