He won't be at every Raw(they might show videos of him every raw though,since it's 3hrs, and constantly showing replays of the "best part of the show" is all WWE does), but will be hopefully at majority.
Raw in Philly that late in March, I'm sure Rock along with everyone appearing at WM will be there(it's the 2nd last Raw before WM)
I believe our anger for the current product stems from the idea that it has so much potential and it's not living up to it. The reason we keep watching is to one day see if it will reach that potential or a level near it. We don't necessarily want the Attitude Era to return, but we want the excitement and the crave to watch more and the need to see what happens next which the Attitude Era brought us.