I think a thick top plate may be a good tuning option. You would probably get more sales for that option.
The 3mm or 3.5mm lower plate might be an option for some?
Now that the new hard suspension parts are coming out....now might be time to make a few.
everything is Cause and effect
every Action has a reaction.
"I drank too much wine - I must take a p!ss"
CAUSE and EFFECT