In Windows Explorer, and other similar apps, you can select files/folders by starting to type their name; as you type, it will select a file name that matches text that you are typing. Can that be done when you have Sidebar selected, it will speed us selecting files/folders and general navigation in Sidebar.
I have already posted this in “Technical Support” topic, I tried to change topic category to “Ideas and Feature Requests”, but could not find how. Mods can delete the older post.
Edit
This is for files and folders in the same folder/level. If you have 200 files and 10 of them stars with “r”, you could loop over them by typing letter “r” on the keyboard. If you continue to type name of a specific file it will eventually select that single file.