Plausible. At this point in time (it is the year 2014 AD), nothing short of 24MP with 1-2 stops of better ISO performance than the original 7D will be "good enough".
Why does it need to be 24 MP? Canon's best camera uses 18.1 MP, and it's a full frame sensor.
I'd love to see a 14 MP 7D II with even faster FPS, increased buffer, and improved dynamic range and noise at low ISO's.