I would like to see the grenade behavior changed as follows:
Left click will aim the grenade
Right click will pull the pin and begin to cook the grenade
Currently grenades cook automatically which is ok but given that the guns have alot of nuance it would just add a bit extra and without making COD United Offensive comparisons thats how it worked in that game and it was great!
what is the benefit of adding this extra level while just holding the left mouse button also gives the needed result ?
Similar arguments could be made for firearms. Why have all the various ways to impact how they are aimed and control recoil (Quick shouldering, hard scoping, following the shot, mounting the weapon)
The more mechanics the higher the potential skill cap. It adds depth and is an easy implementation.