Because it was told it's easier to reach Haron here:

if you need an alternation to LotR Sets and other fantasy/mythology sets at any point, why not making GoT Sets? You did the aforementioned quite well!

The beginning of this sub-range could be done with more default ones, like

- barbarian dressed, low armoured people with a sort of Khopesh sickle sword, on food and mounted (Dothraki, Khalasar).

- ancient & early medieval looking infantry with a sort of Lobster tail helmet / turkish chichak / mughal indian top (Unsullied).

- late medieval armoured army divided into two groups: Pikemen & sort of Pavese carrier (Bolton Phalanx)

and so on ...

So there could be argued with historical models, if there are difficulties with license. The same with the "sort of .." weapons having historical models there shouldn't be any problems, i think?

And what such GOT? I do not know that it.

I did not watch this movie. I do not know what there can be done.

Okay.

Well anyway i hope your previous Fantasy Sub-Ranges don't bore you soon - so you will have enough time to enjoy the series or at least look up some stuff online and decide about that later.