1) Gank-o-meter

2) Add link to both pbf and regular battlefield

3) Add a "not" operator before each filter (i.e. all non-rager non-evils)

4) "Hero pk's only" option (i.e. only calculates pk's at hero, pkph at hero, MD at hero, etc. (whatever MD means :P ) .. This would require you to grab stuff off the "Timeline" page as well.

5) Add a "generate chart" feature.. Bar charts would probably be best. Can choose a group for one axis, and a value for the other axis. And an operation (i.e. sum / avg / count / etc). And filter with other groups. For example, group = class, filter = empire_only, human_only, value = ratio, operation = avg would plot a chart with the average pk ratio for human imperials separated by class. Second thought, this is probably too much work considering we can just cut'n' paste it into excel :p.. But it'd be a cool feature if you think it would be fun to code.