I have been playing in SW using Hero System (off and on) for quite a few years. There are two of us who take turns GMing, both in SW, so I had decided to try and use Hero to change it up a bit. What is nice about Hero is that you start off, well, Heroic. So, you can dive right in to some more high end adventuring. No worrying about starting characters not having enough DB, OB, Skills or Spells.
I have been playing 6E Hero for a while but find it far more bloated than need be - so, I am revisiting 4th Edition. Fantasy Hero 4E is an excellent book. (not sure if you had a hand in that or not). It contains some rough conversions from RM to Hero etc. Curious to see if anyone else has developed some more material.