> Are you talking about for grid-type array, circular-type array, or curve-type array?

Yes these three one :)
That works very simply : at any time an objet is redraw during the array function, its "scale" is increased :)
For example if "scale" is 1.2
You will obtain 1, 1.2, 1.4, 1.6 etc
if "scale" is 0.5
You will obtain 1, 0.5, 0.25, 0.125 etc
And all that for the X Y Z
So you can have an homothetic scaling if X =Y =Z or not if X <> Y <> Z :)
Is it more clear?
Of course user must make a good choice of scale :)

Very practical for natural shells for example :)
(a sphere on an arc will be a very cool snail :)

A supreme refinement will be the "line action" of the redraw of object (gravity center, corner, side, ...)