The farther away you teleport, the less perfectly controlled is your teleport. The less able you are to see the precise placement of all objects so as to arrive silently.
It's not that hard.
I do know a lot of people who treat teleport movement as a single square of actual movement, fwiw.
Personally, I've always liked the idea of teleporting making a "Bamf" sound, ala Nightcrawler/XMen.I think it make sense that the further you teleport, the more difficult it becomes to conceal the sound.
I can almost see an interpretation that Teleporting is only moving 1 square (you move from one square to another, bypassing all the distance in-between).
I was thinking more swirly sparkles like orbing in Charmed.Personally, I've always liked the idea of teleporting making a "Bamf" sound, ala Nightcrawler/XMen.I think it make sense that the further you teleport, the more difficult it becomes to conceal the sound.