Really glad to see 8.0 is in the works the changes sound good and are some of the things I would love to see addressed. Just a few items to think about if it can be fit in 8.0.
Essos troops - It is impossible to play a character in Essos as the sellsword troops are way too expensive my garrisons was costing me 20k for a couple hundred troops. There needs to be more access to slave troops that are cheap but suck and it would be nice to be able to buy more Unsullied like 20, 40, 60 at a time. Otherwise your only option is to use westeros troops which makes playing an Essos character pointless.
Dane axes (two handed axes) - these need a buff they feel too weak, they should have crush though blocks as they are powerful. Even in Wolin viking reenactment there are guys getting their arms broken trying to block Dane axes. It would also make the Ironborn retainers scarier.
Tournament of the Winged knights - Probably one of the coolest quest in the game but the prize needs to be better for the helmet, I would award the Blue decorated tournament helmet as it goes great with the faction colors of the Vale. The armet helmet is too generic and not unique. That said I would also consider buffing the decorated tournament helmets to that of a reinforced armet or houndskull so they are some of the best helmets in the game and worth the price of 5000. Currently that is 55 but it is mentioned that helmets are getting a buff in 8.0 so whatever reinforced armets will be.
Late game Wight army - It would be nice if there were some large wight armies North of the wall that you could face by taking your army in force to go try to deal with them. Like a huge army of 500-1000 or something that you can try to defeat.
Vale Troops - It is mention that they are getting changed up a bit in 8.0 which is great because their knights don't look very knightly, they look like they use the old dragon stone knights.
Banners lances - It would be nice if cavalry used more of the banners from their culture, they seem pretty random atm. ie give Lannister cavalry Lannister banenrs, Vale cavalry Vale banners, etc
Stormland heavy Knights - The helmet they use should be removed from the mod it is too small, probaly the wrost looking helmet in the entire mod. I would just give them a great helmet which still makes them look a little rough.
House Forrester - It would be cool if that was one of the banners that could be picked by the player.
Unique troops - If these ever come back it will be awesome, I miss my Raventree archers.