I think its a bad idea. Some people have a trick to solve this problem for them. If there is a moving clock, then it would be too easy to get coins and too easy to earn first in coin rankings. Then coins wouldnt be worth much. Most of the people who said Good idea said that probably because they can never win. You have to learn your own tricks. Hitdown should stay the same.

Terrible idea imo as of now.

Many have stated earlier that Hitdown already gives too many coins out, and adding a moveable clock will just make it even easier.

If you don't believe me, you can check my thread about the coin problems, and I especially go after Hitdown and it's prizes.