One thing to make Iroquois really unique and make them stand out is using some type of Travois unit building. Like having all drop-off sites being mobile or that you could pack up buildings and move them around while them being frail when they’re in this mode.
This is what I did with my Haudenosaunee concept:
I’d really look forward to literally any new civ in America, especially North America north the Colorado river right now.