Though being new I try to add my view to this shooting from cover.I also want to add a couple things here.
You can in fact move from one place of cover to another, firing in the middle.
In NEW there are two activities listed you can do on your turn who would cover this situation:
- Stand from prone (1 action)
- Drop to prone or crouch (free action)
If you have the Quickstand exploit, standing up from prone is a free action, so you could even shot twice on your turn before dropping prone.
The antidote to this strategy would (could?) be a triggered reaction. I haven't seen anything like a "ready" actions in WOIN but I could imagine declaring a trigger could be one.