Re: Good news, Bad news? Not clutch but....
Hey, anything is possible, it is often hard to tell about a problem from a keyboard. However, my confidence level is this dealership would not be very high.
Even if they forgot to bleed the clutch (didn't know the hydraulic system had to be opened to replace the hardware), which is error #1, they didn't even bother to road test the car after replacing the clutch?? Error #2. And if they did, they didn't feel how difficult the gear box was to shift? Error #2a. While the car is on the lift, most mechanics will look to make sure everything is tight and suspension looks good. Loose diff bolts?? Unlikely, but if so, they missed that. Error #3. Flex disc? Possibly, takes 15 seconds to inspect. Error #3a.
Hard shifting is either tranny linkage out of adjustment, or clutch not properly disengaging (for a variety of reasons). After the diagnosis is made but before the covered repairs are made, I would have a discussion with the SA and the Service Manager about the skills of your tech. On a "bring back", typically it will be the same technician to redo the work. I think you want someone else and you want to know that tech's experience with cars in general, and M cars in particular. My $.02 (at least!!).
Dinan Stage 3 suspension, SS jet coated headers, ESS SC kit w/ 1 range colder NGK's, 92mm pulley, 440 Big Greens, TTFS alpha N tune for meth, RK plenum plates, SBC Endurance Stage 3 Kevlar performance clutch setup, "Jed" lightened DMFW, open brake ducts, TEC cupholder, U.S.(Euro style) tilt/slide armrest, 6k HID fogs, Umnitza bi-xenon flamethrowers w/6k super white low beams, rear fogs, V1/Stealth1, dual head LI, 2.65 diff w/40% lockup/2x dynamic, compact spare, M5 logo trunk carpet, Euro trailer hitch, Mocal oil cooler, ACS type rear spoiler, Rogue custom SSK and tranny mounts, ST 355 BBK (fronts), BP sway bar brackets, Bluetooth retrofit, Speedhut boost gauge (20 psi), Dinan TB's and VS, KB BAP, Howerton/HFS-3 Aquamist WI trunk setup (50/50), with 2nd gauge in rear view mirror, aftermarket trunk mounted sound system integrated into stock unit (amps, crossovers, sub and speakers).......