I really don't think you are doomed. They aren't going to use the best pieces of ebony on a kit board, and I'd imagine that's the result. Apparently ebony can be prone to small splits and cracks if it dries out too much, but I think what you have is just the result of a lower quality bit of wood (and maybe not the best variety of ebony).

If you want a smoother surface, then I'd go with other's advice and use CA to fill the cracks (I'd use black CA as it's a dark but not solid black) and scrape flat. Leave it a couple of days after the oiling before doing that. And then I'd lemon oil on a regular basis, maybe every 6 months.