A while ago I started a series of post about Dragons at Dawn, an attempt to recreate the rules used by Dave Arneson in the first years of the first fantasy campaign.
Here are the whole collection on one easy to access page.
Part I
Part II
Part III
Part IV
Part V
If you haven't read through it all, I can summarize my impressions as very positive. This is 30 years over due, and very interesting.