There were plenty of good reasons to cancel the Arrow: it was very difficult to fly, it burned fuel like crazy, it had poor maneuverability, etc. A friend of mine is considered an expert on its history and is convinced it was the right call, despite going into his research as a huge fan of the plane.
Yeah, I agree it was the right decision - if for maybe the wrong reasons. The point I was trying to convey was that it was cancelled with no alternative because it would have been expensive.