Currently the API can give you the ticks remaining in the current path segment fairly accurately, by summing up the freshly recalculated costs of the remaining movements.

This could be easily extended to the planned next path.

However, for longer distance paths this doesn't work, as the segments aren't calculated yet. How can we give an ETA of the entire thing, from start to goal, even if it isn't calculated yet?

I'm considering something like: goalHeuristic(currentPos) * ticksElapsedSoFar / (goalHeuristic(startPos) - goalHeuristic(currentPos))