In our past bouts / scrimmages I've mostly concentrated on playing defensively - hitting the jammer and knocking her down or out so that she takes a long time to get through the pack or not at all.
We've had a few conversations in the league about how our main goal is to score points (as jammers) and protect our points (as blockers). For the past few months I've been working on my offensive game and thinking about how to play each position to its full effect. Clearly, for any position, communication is key. Know where everyone is and anticipate what might happen and communicate and act accordingly. This is what I've come up with so far for each position.