Yes, that's a really cool thing!
But on the other hand, wouldn't it make sense to say the MEGA65 as a completion of the C65 has 3.5 MHz of speed, as it was intended, but for those beginners who just like to have the "BASIC machine of their dreams", where they can achieve nice and fast-running results with a beginner's language, is some kind of bonus feature?
It's all a matter of perspective
For those "BASIC machine of their dreams" there exists -> Color Maximite. Is cheaper and a damned fast BASIC machine.