PLEASE download and TEST -> Action Button Mod by DoctorSheep.
That should be the type of interface that ARMA 3 uses.

I love - love - love ARMA 3 !!!!!!!!!!!!!!!!!

However, the most FRUSTRATING part of ARMA3 is the action menu. It needs to be completely overhauled with a USER FRIENDLY interface. I hate it when I can see an object on the ground that I want to pick up, but I can't find the "sweet spot" pick it up.

Or I can't open a fence because I can't find the "sweet spot".

Or I can't get to a dead soldier's inventory because I can't find the "sweet spot".

Or I can't open a door because I can't find the "sweet spot".

You get the idea. The interface needs improvement. An the Action Button mod is a big step toward that improvement. That type of interface should be integrated into ARMA 3.