Can we get some insight on to how the edge works?

Do you have to be in the open for some time for bonus to start working? Or does the bonus accumulate depending on amount of time spent visible? Is it only damage, or other effects are improved as well (like lag for scissors and mountain storm)? And, most important, is the amount of surplus damage of any significance on 51 rank?

nt

I've always wanted to play a non hiding rager berserker assassin.

At the same time, I probably wouldn't land many kills doing so.