@deft-code In my case I'm using pathfinder to find the closest damaged/missing road position by travel distance using range of 3 so there's a lot of wasted CPU since there's often hundreds of goals to filter by range using the path's final position. I've figured out some tricks to mitigate the CPU usage but getting the index from the results would just be so nice.
Speaking of a "fully featured private server" for Arena -- no, it is not planned. But at some point we will publish tools to create and run your own arenas. These tools will contain the minimal runtime to test mechanics locally. No multiplayer connectivity will be available there, and when finished, such custom arenas should be deployed to our cluster to run real multiplayer matches.