Your comments

My gym also uses a 8.5kg ez-bar for some strange reason. Unfortunately, having set increments on the slider and a minimum weight of 20 doesn't let me enter this unusual bar weight.

I think it's a must-have feature for the app to be a replacement for a personal coach.

Customizable bar weight would be fantastic. My gym has odd bar weights and trying do the math during a workout really interrupts the flow.