I think the answer to your question is “Yes”. My reason for saying that is that when you write your own code in a plugin you can make it do almost anything.
However, “Yes” on its own it not a very useful answer.
What is your real question? The opening sentence asks about the “atom.io” editor. The last two sentences refer to Notepad++. Nothing between them mentions either editor. You know that Notepad++ is written by volunteers and enthusiasts. They continually work to enhance Notepad++ with the features that inspire them. If you really want your suggestions added then you could either (a) write you own plugin (or plugins) to do what you want; or (b) describe the features in a way that inspires someone else, or © pay someone.