I had the same vibration problem on my 2010.
same conditions, hard acceleration .. vibes through clutch pedal. This is the first hydraulic clutch car I've ever gotten vibes through. I know someone above posted that they had the group n motor and trans mounts... this is where mine got interesting.
I have 30k mi on my car (yeah I know I drive a lot) this past weekend installed the gpN trans mount (subframe lockdown/diff mounts and ss w bushings I installed previously).
Since the trans mount install, I've been puttin a hurtin on the poor car and not once has the clutch pedal given me the vibration. I wouldn't think a trans mount would have this sort of effect... but..
I've been wrenching on cars since I was old enough to hold a wrench and honestly I couldn't begin to even wonder how/where the vibration would be caused let alone fixed but for the last 3 days mine hasn't done it once. Dunno.. guess I'll have to wait and see.