Well, it's still a work in progress, so I may add some more to the 4/4 and 6/4 time, to make it more interesting.
And, 6/4 is MEANT to be hard(er). If the HP drain is too much for you, then you better get the beats faster.
And, I'm only focusing on the beat mapping - I would need a hand for any extras.
As for 3/4... didn't you see that 3/4 time is NOWHERE near complete?
But, CDFA... thanks for these comments. If you want to help in any way, you are welcome to - I always need a helping hand with things like this!