Is there an Lighroom or Photoshop extension for OSX Photos App in the planning? It would be amazing to use the editing tools from camera raw right inside the Photos App. Please Adobe, do us the favor!
The tools you want are available right now in Lightroom or Photoshop... maybe you can do yourself a favour and get them.
What you are asking is not going to happen.
Just use Lightroom. There is really nothing AMAZING about the Photos App or most Apple Apps for that matter. The quality of OS X is even going down hill. I like my new late 2015 27" iMac hardware though.