Not at this point as I was selling it anyway originally, instead it's staying on as my wife's car and family bus..and some corrosion in the rear arches will be the least of its problems at that point.
Also its not going down hill fast I keep the affected areas clean and coated in wax so it'll last as long as it needs to. I keep meaning to get it sorted..but I've kinda made my peace with it. If I wanted rid I could literally get another tomorrow but its currently a free car having been paid off ages ago so as long as she runs fine and is safe it's all good.