MOTM

>>>>
Personally, I voted for the layout, not necessarily the assignment of 
which control is in which location. I think this could be improved 
on. Ideas?
<<<<

Well, there are two existing examples to choose from:

1. The Moog filterbank starts with low bands at the top and works its 
way down thus:

1  2
3  4
5  6
7  8

2. Desk EQs start at the bottom and go up, albeit in a single column:

7  8
5  6
3  4
1  2

3. Then you have vertical orientation possibilities:

1  5
2  6
3  7
4  8

4. and

4  8
3  7
2  6
1  5

For examples 1 and 3, I'd put LP at the top left and HP at the bottom 
left, reversing their positions for examples 2 and 4. That's about 
the best you can do, given the constraints of the layout.

Moe