1. Add visual feedback when defusing a mine. Progress bar or sparks or anything really. 2. Add visual feedback when your vehicle has defusal. Add an icon on the vehicle GUI that indicate that your vehicle has defusal and you can safely go over mines.
I agree with both of these points. Something like the sabotage progress bar would work for that? I'm unsure what gui icon, but just taking the defusal skill one and strapping it above the vehicle weapons area might work?
Same style of icon too - yellow triangle, but with the shadow of an NF mine inside. Minimum artist work and gets the point across beautifully. Cyberkiller used to have a spray of that.