Add a splitter

I use a G27 wheel with a shifter, and to go into the higher gears (such as 7-12), you need a splitter because the shifter only has 6 gears. For example, if I were driving the T75 using the shifter and shifted through gears 1-6, I'd then need a button to transfer to gears 7-12 to keep going. This seems like an easy feature to add.