This is an unusual solution. How about raising the floor in the garage? Lay down 1" concrete squares. Need more bricks. Big box store near me have two thicknesses. A can pour self leveling concrete if the floor isn't flat. How much loss in the door opening can you loose. May have to do some adjustment of the guides for the garage door. Likely the door height into the garage is set above the floor in the garage.
I reread your post. That is an interesting solution. I didn’t quite understand it at first but I think it would work. Using the pavers to take up the height gain and then using leveling liquid to seal and level. Not saying I will do it but it definitely has merit.