grind friction/speed

I would love to the ability to turn up the grind friction so grinding would feel more realistic.  

currently when I'm grinding on any surface it feels like there is no such thing as friction, often times it feels like I lose no speed at all or even weirdly sometimes I actually gain speed when getting into a grind which makes zero sense and doesn't feel good from a realistic perspective. 

 realistically when you grind something especially concrete material you are going to lose a lot of speed.

for example when you guys implemented the dark slides the first thing I noticed was the slower grind speed due to the friction against your grip tape which makes sense and that feels more like what a regular grind should feel like.

a grind friction slider would be a huge lW for the realistic community..

on a side note I don't think you should have the ability to turn up the grind speed from where it is currently at because that would just be kind of ridiculous, you should only be able to turn it down.