OP?! HOW!? What?! OP is pretty much ANY missile fired from a big ship to a little ship. NOTHING LEFT. This would do no damage. It would help you cover the vast amounts of empty space in a more plausible fashion than pushing up or down to switch turrets or ships. There's currently about 60 ways to get completely trapped somewhere where not even digging or trying to build a pocket ship will get you out. Teleporters might help?
Again, I don't know why everyone is so concerned about spam. It's a NON ISSUE!
A simple check-mark in the corner of the window will disallow any requests from person X, and that's just one of many many ways of doing it. And it's not like they can teleport you from anywhere, they LITERALLY have to find you first. You're more likely to be annoyed by someone ramming your ship in sector 128,-57,-205
As for Incap, If you don't like em, don't use em. simple.
On a side note, wouldn't it be hilarious if every time you use a teleporter, the server reports your death?