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Planning to be able to move top/bottom/left/right padding independently which may solve this for you?

No, I mean having a smaller space in one place where is can't go right now, I know about the independent moving, but then it has to be bigger, and it is harder to make themes with smaller buttons.

Actually I think independent padding would solve his problem

If you want the active area of a springboard to be one 30px the left side of the screen but be the size of 50px (lets say blocksize is 50px for ease of the example):
you would create a block 2blocksizes large (100px) and 30px is one third of blocksize so you would ask the left padding to be 30% of blocksize. This gives us 80px of our 100px leaving 20px to be padded from the right. So right padding would be 20% of blocksize. This would handle your X coordinate location and so the same kind of thing would be done for your Y coordinate.

Easier than trying to accurately drag an object, pixel by pixel on a touch screen. You could also run the same kind of calculation with just pixels and avoid the whole percentage thing but working in percentages will be more likely to enable your theme to work on different sized screens.

zactly.

i meant on springboards and action buttons

This would apply to anything with a BG/Frame

Independent padding would be really helpful. Especially when trying to highlight a springboard button while active.