There are two more issues I have noticed with the LIRR add-on. 1. Signage at Jamaica is actually all capitals instead of the J being capital only. (View the picture to see what I mean). 2. The trains that are bound for Ronkonkoma actually diverge on the southern tracks at DIVIDE Interlocking after Hicksville. After completing a service to Ronkonkoma, when I watched the AI drive past Hicksville, the train diverged to the northern tracks, which serve Huntington (electrified) and Port Jefferson (non-electrified).
Sorry for the darkness, but as you can see here, the train is diverging to the left (which is north towards Huntington and Port Jefferson) when it is supposed to diverge towards the south (which is to the right and towards Ronkonkoma).