Hi I flashed my 2013 Focus ST with a canned tune and read the car to see what they changed. The handheld had the option to disable "shift assist" and "launch assist." Comparing my stock file to what I pulled from the canned tune, I don't see anything that looks like it would effect this. The Torque based decel tables were left stock. Could support for tuning or enabling/disabling these features be added?
EDIT: The tune did change "load switch" from 6 to 1 under Transmisson - General. Can't find any info on this though.