I don't think the name is necessarily the problem, but much more so the mascot. And I don't just mean Chief Wahoo, but any mascot you come up with is going to be problematic. It is always going to border on offensive. Same with the Chiefs, which is why they have the KC Wolf (and Warpaint, the horse, ridden now by a Chiefs cheerleader) instead of anything resembling Native American history (they got rid of that stuff in the 80's).