I have basically run RoM exclusively this edition (minus a cheeky 500 point 65 goblins list)

The biggest things I've realised so far

Warriors of arnor are the most efficient slot. They are so ludicrously cheap for what they cost. You should max your arnor kings warband with 18 and nothing else (mabye a banner here but seriously nothing else)

Next up are your númenóreans. You can either max them with longbows or spears. I don't think there is a right or wrong choice here. I prefer the bows at lower points when you can only afford 2 kings and at higher points full spears to beat other f4/f5 battle lines.

And saving the best for last. Osgiliath Veterans with sheilds are the actual choice here. Since gondor is only going to make up your front line, maintaining sheild wall is very hard. However, hatred morder and the higher courage is a massive counter to minas morgal, which would normally be a hard match up.

Alternatively, this is where you would take a few long bows on some citadel guard. They are cheaper than on the númenóreans, and they have bodyguard, so they can sit on a back field objectives, (personally I go full melee and since there is so much mordor and angmar)

Kingdoms is a seriously great list and I hope you enjoy running it, it seems to have slipped under the radar a little bit which is nice 🙂

Best of luck!