The endeavor clearly says 'defeat Tholians' on Ground. It then identifies Missions &/or TFO's. While it does not specifically suggest New Romulus like it also suggest many later Battlezone area's. New Romulus was really just a precursor to the Battlezone system, thought it did need some clean up and why they later evolved it into it's own Episode ARC, mostly so everyone got more involved in rebuilding it.
Regardless it should likely be included as it is a 'Ground' map and they are in fact Tholians on New Romulus.
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My character Tsin'xing