There's definitely a different feeling between having a running Discord/Slack tab vs. using a native app for it, if you're using it a lot. A native notification bar icon, shortcuts in the menus/app launchers, the app not exiting if i need to restart the browser, the app not being affected by extensions I install (adblockers, etc).
The app being separate from the browser is good. But it should still be the same engine running this. The same master process as well, possibly?
Either way, Electron has been a huge boon for apps being available natively on Linux and that's just awesome. I don't want to lose that.