@shredder - That wouldn't work because
1 - You can't move the location anywhere but on the archon itself (unless you used some mobile grid, but that still wouldn't work as well) so you couldn't expand the stun range as the scourages move outward.
2 - The location for stunning you described (the amount of space the scourage travels in a time frame) would be a fairly large square because the scourage could move diagonally as well as horizontally and vertically- making the location (even if they were centered in the scourages) stun heroes just by being near the scourages and not being hit by them.
3 - Since the location is on the archon and is a square without any gaps, being anywhere near the archon would stun you, even if you werent hit my scourages (like assassin's stun).
You are clearly stunned when you come into contact with a scourage. Since you can't move locations without centering them on a unit, it would be impossible to duplicate the attack without flying units as those.
Furthermore, locations aren't even on the scourages themselves. You can't have multiple locations centered on multiple scourages just anywhere on the map. All locations would be centered on the top-leftmost unit, thus other scourages would have no effect if done with centering locations on scourages. The scourages themselves trigger the stun when they go over a hero's location.
None.