What are some things an individual Teague monarch could do to improve their situation in the Riverlands?

hedrigal:

racefortheironthrone:

1. Given that the Teagues’ greatest weakness was that they were disliked and frequentally faced rebellions, build a coalition, whether that’s through marriage alliances into the nobility, or political alliances with the merchant/burgher class by giving out town and city charters, or the like.
2. Given that the Riverlands are historically underdeveloped, strengthen their own position – build roads and bridges to encourage trade, allow armies to march quickly from place to place, and block Ironborn raids downriver; build castles at geostrategic locations like the convergence of the Trident, expand state capacity especially when it comes to revenue and records-keeping. 

Thanks, I’m trying to help out with the Hidden History project that other guy is doing, and I want to come up with notes to talk about more Teagues than the three we know of who ruled for more than a day.

Cool. Keep in mind, though, from the WOIAF, it seems like the Teagues didn’t do this so much (especially with the charters, since the Riverlands has no cities), and got frequently overthrown.