The damper, or delay valve, is designed to slip the clutch a little upon engagement. It delays the full positive engagement of the pressure plate to minimize driveline shock and make engagement smoother for those unfamiliar with working a clutch. The side effects of it's presence are several... 1) will wear you clutch disc faster due to the slight slippage it induces (verified a member during a conversation with South Bend), 2) causes the engagement point felt in the clutch pedal to be inconsistent, can be described as a floating engagement point which is different with every engagement, 3) because of this floating engagement point, can make even the most seasoned manual drivers to feel like rookies during spirited driving with quick up and down shifts, and 4) can make smooth heel/toe downshifts nearly impossible. Also, at least one member has had the damper burst while driving, leaving him stranded and ruining his dress pants and wing-tip dress shoes when it puked hydraulic fluid all over them.
If you are in there messing with all those pipes and re-bleeding the system, I would highly recommend getting the damper out of there. It's literally right there. Remove it. The thread that you mentioned has the part number and instructions to replace it with an OEM coupler.