I just don't see how having to consult a spread sheet or spend hours "researching" options for a NPC character to build them correctly for your party is fun!
The spreadsheet's faster than rolling dice by hand, which was what I was doing before I wrote it. The point though is I much rather roll my stats as the first step to creating my character, before I choose my race and class, the way the Good Gygax intended.
As for a crafting system, I hope they leave it out all together. Brewing a potion or building a magic item in the middle of a dungeon is just silly. If they implement strongholds or something for higher levels, I could see it as something you do during downtime.