Don't start a new line every time you start a new sentence. Collecting related ideas into paragraphs will help you organize your thoughts better, and help people understand you.
I can't see Inner Rage being an increase in damage per rage.
That would mean we would like to keep it at all times, and possibly don't use any ability if needed :s
That's not a good design, and I can't see Blizzard doing this given what they've stated.
On the reverse side, having Inner Rage increasing damage, but decreasing damage per rage fits their stated goals : inner rage is an automatic rage dump.