well the imp only had two major battles, so i might agree as to not including him even though.... *sniff* ...you are right about the hound though, i often confuse him with his brother and had him mixed up here as well, hound is out! the mountain does the pillaging. and yes i would put him with the lannisters unless you manage to create a barb unit with a general.
i do like theon and his sister asha! if generals could comandeer ships i´d vote for the onion knight as well.
mance for the wildlings sounds good. the king of giants should definitely be in.
nestor royce and/or yohn royce for house arryn. (if barbs can have generals: timett son of timett, shagga son of dolf, chella daughter of cheyk. or use named barbarian units and place them around/in the vale. also berric dondarrion, the lightning lord and a pack of wolves led by nymeria could be placed to harass some lannisters)
prince oberyn, the red viper, for martell.
jon umber, the greatjon, for the starks.
edmure tully for house tully. also maybe ser brynden tully, the blackfish.
for house tyrell: ser loras, knight of the flowers.
lady melisandre of ashai for stannis, though in reality she does no fighting herself....
also agree on pillaging being done more often as opposed to being more rewarding, my idea was that human players would do it more often is it was more rewarding.
another thing: aren´t we forgetting house targaryen and daenerys (generals: barristan selmy, jhogo or one of the other bloodriders, grey worm)? though that would require an additional continent with barbarian cities. a neat thing would be to have three (relatively weak) unique dragon units, drogon, viserion and rhaegal. you
know you want to level these up and invade/liberate westeros with these
that wasn´t very structured... apologies...