There are a couple of hints we could take from fiction of course, and simple geography.

1) Fictionally it is near New Orleans. So, this probably means it is not seperated from it by large bodies of water. Looking at a map of Louisiana, there is too much to the east of New Orleans all the way to the Mississippi line to fit a city anywhere. It's basically New Orleans East all the way to the twinspan which leads to Slidell after crossing the lake. So I don't think it lies east of New Orleans.

2) We have WKRK radio station. Whether known or not by the admins who I assume made up the designation for the Hathian radio station, they have in doing so eliminated more than half of Louisiana as possible locations for Hathian. The FCC designates all radio stations located EAST of the Mississippi river with a W as the first letter, and all radio stations located WEST of the Mississippi river with a K as the first letter. Since the Mississippi runs through Louisiana, the designation of a W dictates that Hathian is located east of the river. Neat how consistency works huh?

3) If you consider "New Orleans" to be "Greater New Orleans", then the GNO area is much bigger than just New Orleans proper, and includes Kenner and Metairie as well. Which makes sense, there in nowhere to place a Hathian from Kenner all the way east to New Orleans East anyway.

4) Across the lake seems too far to me to still be "near". Though one could argue it could be north of the lake of course, but that area is pretty heavily developed south of I-12 with Ponchatoula, Mandevillie, Lacombe, and Slidell taking you all the way around the lake to the Mississippi border and then the GNO area making the circle all the way west to kenner along the south of lake Ponchatrain.

5) There is apparently some significant body of water north of Hathian, which provides for a limited 'beach' area. Thus, again, north of Lake Ponchatrain(or any lake) would not really do well, as the lake would be to the south.

There is actually only one spot on the map that seems to fit Hathian fairly well. That would place it south of Lake Maurepas, likely nestled into it south and east of the lake and with I-55 to the east of Hathian. There is no significant development in that area, I think it is mostly swampland, but if it were landfilled, like much of Kenner and Metairie were to make habitable land west of New Orleans, then it could provide a reasonable not overly-populated area for where Hathian would be able to fit. The closest towns to Hathian would thus be Reserve and Norco, with Kenner the third closest to it.

I know there is no established location for Hathian exactly and that the admins probably prefer to keep it's exact location vague, but just as an exercise in geography and to see if I could find a place for Hathian given what little I know about it's location with hints given fictionally or in game. Anyone care to make a better guess? 🙂