Very often people want to work with only few files in Google Drive, but now we must select folders to download and wait when download is finished.
Better way is make the remote mount feature, that will create a disk (on windows) or folder (on linux, mac) that will show remote file structure without downloading file contents.
This is already implemented in some popular cloud providers (Seafile Drive, Dropbox, Yandex.Disk, Webdav, SMB).
There are already exists some opensource solutions for this way of mounting:
But they at now have few feature list and some problems. So will be good to see better implementing remote mounting Google Drive feature from Insync team.