There is no visual feedback as to how much strength you will throw something with. A player may wonder how long to hold till they are throwing furthest? Put another way, you throw an item with x force, if you hold down attack (or use for some equipment), then x increases until max.
Player doesn't know when max is reached.
Player doesn't know how quickly max will be reached.
Is the strength even increasing according to some curve? No idea!
I've looked at other games, but of the ones that let you change the strength of the throw, I could not find one that doesn't outright show you a trajectory.
So here's the crux, what is the point of allowing the player this if it is so poorly communicated? What could be done to improve it?
Here's my 5 cent suggestion: as force is increasing, increase the FOV, when it stops increasing, max has been reached.