Hey, thanks for showing interest in the game.
Since this game is made with Unreal Engine 5 though it needs quite the powerful device to run and even if there was a way for me to create a gamecube build, it wouldn't be able to handle the game.
I mean, of course the Gamecube port would have lower-poly models and lower-quality textures; that's a given. I'm also aware that, even beyond graphics, it would likely require building a new engine since obviously UE5 has no "export to Gamecube ISO" option, but I guess that's your way of saying it's not worth it, which is understandable. Oh well; thanks for responding.