Sarcasm.... Not very nice....
Why the long mast you ask???
Lets just say this, i'm sure franky has designed it to its best capabilties!! Hence, looks don't really come into effect... If the aerodynamics work... Then dont f*** em up, and leave it as is... Thats probably how the design came about....!
If you think thats bad, picture the look o the due R66!!??
The pendulum moment doesn't come across as a problem, more of a factor to adapt to i think... the worst problem ive seen with the robbys (R22 mostly) is the tail boom, never had a problem with it myself, but ive seen them clobbered a couple of times, not nice at all!!
Luckily helis on the ground at time! Tail booms sent back to california for repair.... Yeowser...