Feature Request Groups in Unity Hierarchy

Problem: In Unity, Currently to organize gameobjects in hierarchy. We make empty gameobject and put different gameobjects under it as child gameobjects.

For example, See pics below:

(1) (2)

Solution: Instead Unity can add a feature of groups. Editor will save different gameobjects under different groups.
But when you publish project, It won't consider parent group as empty gameobject and rather put all of them under same parent which will save performance but won't compromise readability and easy understandability too

(Pardon me, If there's a similar feature already and I didn't knew and please address me that feature)

 

I'm not convinced there is any performance penalty to save on. Am I wrong about that?

 

Nvm I rechecked it was my Unity editor. It hogs cpu for few secs then saves in memory. But it crashed twice while I tested on my own.

Though how do I close this thread?