Map Edge Wrapping - a plausible solution?

[MakerBlock]

It's an open question as to whether and how the edge wrapping of the game field should work.

Should the edge be visible? Should it only show up on the radar? Should firing work through the edge? Should you be able to see an enemy over the edge?

Proposed solutions:

1. You can't see over the edge, but you can fire. I think this would be a fun solution.
2. There is a "dust cloud" all along the edges. You can't see through it, even your own ship is obscured. This would create a visible edge for the player, and add a little bit of a strategic element - a place where you can hide. (Possibly from sensors too?)