Aggro system?

So I am running a log horizon campaign using the fan translation of the official ruleset. My real question is this. Is there a script out there that would let me display or highlight the pc with the highest Hate/aggro? The reason for this is it allows me as a gm to track who the NPC's and mobs should be attacking. For those unfamiliar with Log Horizon its an anime about being caught in an MMO. So the Aggro mechanic is a huge part of it!

Does the script need to determine who has the highest agro, or is it more about easily marking them?  Do only you need to see the marking, or should the players also see it?

It would be more about me seeing it than anything having it add off of the skills would be ideal. Each skill has a certain hate cost 

I'd probably suggest using one of the token bars.  Set the max to something that makes sense for the scale (10? 100?), then you can use TokenMod to adjust: !token-mod --set bar1_value|+[[@{selected|someAgroStat}]]

I'll give that a try.