Proposition for alternative controls (gamepad) - give your opinion

PC players on mnk have the ability to quickily interact, on a gamepad you have to hold action button. 

What if you could use grenade bumper? Click to interact, hold to use grenade. 

I know that some of you  will say that it would be easy to accidentally throw a grenade. I thought that I would keep accidentally pressing the right stick, but its no longer an issue. And these is just my alternative for default controls.