Request: TargetInfo Feature

Its possible to add a feature in TargetInfo to know what is targetting your target? Could be of use to know who has the hate of a mob.

Other players' targets are available client-side, but not mob targets. In order to get the current target of a mob, a request has to be sent to the server. So, no this can't in the general case, be done (without being very detectable), and what we could implement isn't going to tell you who has hate. For that you can either use the Libra spell, or /as <t>, to ask the server.

Ah ok, though it was possible cause mappy creates a line from mobs to players but I guess thats the claim id?

correct, it's little more than the last player that acted on the mob. if you aggro without claiming there won't be a line, even though the mob has clearly targeted you.