Oh my... my intentions of a script like that would be of one made by a third party person. It was just an inspired notion, and not really a wanted request - please continue ahead with the super-blend request first. ;-) lol!
This idea is most likely even too esoteric of a function to warrant including in the Wish List. Especially since it's not hard to accomplish with the existing Flow tool.

By "Smartly", it would simply have the ability to judge placement and spacing, making duplications of the chosen object in a matter that would create the pattern.
As In the case of OSTexo performing the array to duplicate his object.
But in this case, the script would know to place them in a staggered "checker-board" pattern, allowing for proper spacing.

The script could, I imagine perform the Flowing of this array to the target surface. Matching the surfaces point to point as usual.
But one more thing I thought of - If the target surface has trim areas, the final flowed object group would also be trimmed. Cut outwards perpendicular to the normals of course.