I don't know if I like the graphic representation. If you have to roll six dice pools (4e: minor: How much extra used from healing ability?, standard: attack and damage... on hit another hit and damage roll, free: saving throw) the posts get really cluttered with colored dice graphics.
That was my initial reaction as well. The graphical representation certainly steals focus of the post when really the post itself should be the focus. I suspect most games will hide the rolls behind a spoiler tag though, so that could help. I would pretty much be happy with just seeing 1d20+4=21 though.
They'll be below the posts, not in the middle of them.
But we'll add some options later for a "streamlined" view which each user can select via his settings.
One suggestion. Be able to roll the dice as you're writing the post, I could only get it to add after I made the post and it said "add dice rolls".