Use Goto Anything based on VCS

For example:

You're working in a GIT repository, without a "*.sublime-project" file.

CTRL+P (Cmd+P; Goto Anything) should work based on this GIT repository. You're project-root is the ".git" folder and in ".gitignore" are files to be ignored.

Now it's not necessary to create a "*.sublime-project" for your project.