Highlight has never been included into the replay, and no one has ever asked for it to be until now. Given that you're in favor of complete seperation of UI and replay (similar to Lix's implementation) - for example, not replaying (or cancelling the replay due to) skill selection - I find it strange that you would ask for this to be tracked in the replay. Nonetheless, I can look at implementing this if there are enough people who want the replay to track the highlit lemming.