It already can. You don't need to go through the MAS to download and install an app on your Mac.
What I am talking about is if I am downloading something from the MAS. If I am using an app and it pops up first time with the spinning gear I should be able to hide the spinning gear for that specific app.
I find it absurdly ironic that such a powerful system doesn't give me that simple ability.
It's my understanding (albeit limited) that the spinning gear was an indicator to the user that AppleScript was doing something (did I ask the app to do this?!?!)
You will always see the gear in the menu bar if you are using Automator.
Not having the spinning gear just because app came from MAS implies a whole level of trust that Apple probably isn't ready to afford. But again I have no idea about Apple internal design mentality.
I think the issue is that sometimes the spinning gear doesn't go away after the script completes confusing users. This is an OSX bug not anything to do with the Mac App Store.
The issue was literally that the gear would pop-up and start switching around the order of the icons in random order. It wasn't even consistent. Some users had it on Yosemite others didn't.
Surely it should be possible to turn of the spinning gear without having to turn of the security measures.
That's like saying I should be able to turn off the lock icon in the browser address bar for HTTPS. Those spinning gears are there to tell the user that stuff is happening, even if they might not be aware that they requested something to happen. If you can turn it off, then every piece of malware is going to tell the user that they can't use the app unless they turn that off. And then they have no protection, which is the exact opposite thing that Apple wanted.
If you let anyone turn it off, then effectively you've let everyone turn it off.
Again. The gear is there to tell you something specific is going on but most people don't care about that. So of course it should be possible to turn it off for specific apps that you actually trust.
This is only an issue with Sandboxed apps not apps outside the app store. And it wasn't an issue until Yosemite.
Not sure why you keep insisting on arguing against something that isn't what is being suggested for a solution.
If you allow that, then "Amazing Super Awesome Free Desktop Calendars" is going to ask for it as well.