We'll have to invent a new line of books with an easy-to-read format - large print, a few sentences per page, and quality illustrations - but non-traditional content. My son is currently interested in mummies, but I don't think I'll be able to find any easy readers for that.

I started writing a set of these when my son was 4 on topics he was interested in at the time, like the solar system and the American Revolution. Each one also incorporated practice with one or two particular word families. I finished writing and illustrating 5 or 6 before we identified his vision problems and his reading took off enough that he didn't need them anymore. Sadly, the computer they were on and all of the backup media fell victim to the 2004 hurricanes. It occurs to me that now, with POD available, that I might actually be able to market a non-fiction hi-lo series aimed at gifted kids instead of at low-reading level older children and adults. One more thing to add to the list...
ETA: My son loved being read high-level content even when he couldn't read it to himself. It didn't cause him any problems learning to read - his visual processing did, though.