I have a caster-heavy raid and am trying to diagnose some dps issues, the most likely cause of lost dps for casters is movement and based on the Replay functionality it’s apparent that distance traveled COULD be tracked since player positions are but I can’t see anywhere that shows it currently. Could show up in the Resources section for simplicity (it’s not a resource but I can’t think of anywhere better to put it aside from its own section and I don’t think it’s worth that). Comparing dps and distance traveled will likely help confirm the issue for specific players.
In my perfect world, there’d also be a graph showing when player movement is happening overlaid by vertical bars indicating when spells are cast (similar to how deaths look on the damage done graph) to help determine efficiency of movement.