the lakota and haunds flag does not show in any of my buildings.
Can you post a screenshot?
The way the current Haudenosaunee and Lakota flags look will always make them look unfinished, especially since they already have their own flags in the UI that do a good enough job at representing them.
A better solution: give the players the option to pick from a selection of flags that fit their civilization in the timeframe. Many of the flags currrently in the game don’t do a good enough job at representing their civilizations. Giving the player a choice to pick which style of flag they would prefer (even a solid player-colored one for those who want it) for the civ they’re currently playing would fit the game.