This is a pretty conclusive list, but the subsequent discussion had quite a bit of misinformation spattered in. I'll respond to the best of my understanding.
ashockney said:
Is Morrus's "fan creation of the week" compliant with the new GSL?
This will fall under the (to be released) fan site policy
ashockney said:
Release a classbook with DRUID, BARBARIAN, BARD, MONK, etc?
Yes. If those terms are later added to the GSL, there would be a conflict and the product would likely have to be taken off of the shelves (Consult a lawyer for verification if you plan on doing this).
ashockney said:
Release a standalone module for use by itself without reference? What if EVERY creature I use has at least one +1 level to it?
Yes.
ashockney said:
Release a DUNGEON Magazine type product to compete with the online product from WOTC?
Yes, as long as it is a .PDF (this is actually my publishing plan).
ashockney said:
Release a class splatbook with all new powers you can use "instead" of the existing powers in the Core Rules (Daily, Encounter, At Will)?
Yes. Including the use of the format used in official WotC products.
ashockney said:
Yes.
ashockney said:
Release a book of magic items?
Yes. Including the use of the format used in official WotC products.
ashockney said:
Release of book of "common" treasures?
Absolutely.
ashockney said:
Release a monster book with every monster statted out for every level? Goblin 1, Goblin 2, Goblin 3...Goblin 30
Yes, provided you don't reproduce abilities not expressly permitted. For any of the nonstandard races given in the back of the MM, you could do this with the appropriate racial traits included (without reference). And a very cool idea at that.
ashockney said:
Is there a way you could do something similiar to Arcana Unearthed any longer?
Somewhat tricky. This is one I would suggest talking to a lawyer about. It would have to be done carefully to avoid "redefinition" issues, and you couldn't change or tweak the combat system. Probably best to develop a new system for something this different or wait for the d20 SRD.
ashockney said:
Is there ANY way you could do something like Conan, simply without referencing the experience/advancement, but with all new classes, powers, abilities, feats, etc. (all low magic themed).
Don't know if this is the best system for it, but I suppose you could. Again, you couldn't change or tweak the combat system.
ashockney said:
Can you do Star Wars? (or Star Warriors to avoid OGL issues) or Spycraft, or Superheroes?
Star Wars Saga is actually better than any 4e conversion is likely to be. For the others, you'll probably want to wait for the d20 SRD.
ashockney said:
Can you create rules content and support for things that don't exist? How to handle large scale wars, empire building, running a kingdom, running a business, forming and leading an organization or guild, the game effects of a catastrophe?
Yup. Without a doubt.
ashockney said:
Can you create new tools or new ways for characters to get powers beyond those from their race, class, feats, and magic items? For example, visiting a static location, or as a benefit for being part of an organization, or for pledging allegiance to a diety...
Sure. Obviously... watch for balance issues.