The suggestion of having a new steerer brazed in and/or having the fork checked out by a framebuilder is a good one. I had Chris Kvale in the Twin Cities build up the crown race seat on my Raleigh RRA fork over the winter. That ran around $70 plus shipping. I did not have him paint it, but did so myself and it matched pretty well and so far is holding up just fine. The fork crown lug and part way down the blades needed repainting from this, which I would think would be a similar level of paint damage to what you need to have done. There is always the chance that once it is looked at by someone qualified, it might be deemed fine.