BrendaEM:
I wish the IDE didn't use all of its sketches from individual folders. All of my projects have been the one sketch folder only. Placing a single file inside a folder is just silly from a computer management point of view.
The problem is that the Arduino IDE loads all source files from the folder as tabs. If you put multiple different sketches in a single folder then whenever you opened one it would open every other one as tabs and it wouldn't compile. In order to do this any other way they would need to add an additional file to hold the metadata of which files belonged to that project. At that point you're better off just putting each project in its own folder. You'll appreciate the usefulness of a project folder once you start writing more complex sketches that have multiple files. Now the requirement that the folder has the same name as the sketch I find completely arbitrary and don't understand why they do that.
BrendaEM:
I kind of wish we had an icon with a preview of the first few lines of code, like a photo thumbnail. I know this is not easy to implement, but I have to open each file with the IDE to see what it does, and when I do I lose context of where I was from a file management stance.
Just give your sketches descriptive names, then you'll know just by reading the name.