Tweeting this, I now realize the last musuo game made under Omega Force *was* in fact Three Hopes. So it's not a crazy reach to say Fire Emblem has contributed to the current state of Dynasty Warriors.
Now that I'm a good way through my Wei playthrough of DW: Origins, all the Three Houses inspiration is so abundantly clear. They even have their own version of "Funny Footsteps" in the bond conversations.
[Sound on!] People complain about recycled animations in Elden Ring while FROMSOFTWARE is out here hand-animating the fingers manually hitting every note on the song played on this NPC's instrument perfectly. Absolutely beautiful effort on such a tiny scale.