I would call that almost impossible, as TS is usually extremely sensitive to any capacitance change, so HW modification is out of the game. Please correct me if I am wrong.
The CTS is typically calibrated and adjusted in sensitivity for each sense circuit individually, so HW mod could make that completely inoperable. (sensor stuck in detecting or not-detecting state).
Also, linear slides usually are comprised of multiple shaped electrodes to enable the linear sensing a possibility. Defeating that with just a HW mod would become extremely complicated.
//EDIT: Typo