Dr. Awkward said:
Here's something: how restrictive is the "one or the other" clause? I'm specifically thinking of Paizo. They're planning to work with Necro on 4E, but keep publishing their own 3E stuff. However, their main business is actually being a storefront for games and gaming accessories including their own. If they stick with 3E, will they be able to sell Necro's 4E stuff in their online store, or vice versa: if they move to 4E will they have to discontinue selling all the 3E stock they have sitting around...back issues, older books, etc.?
Some related questions: how distanced do Necro and Paizo have to be in order for one to sell 4E stuff and the other to sell 3E stuff? If most of the Paizo guys have writing credits on Necro books, does that violate the GSL? Will writers have to pick sides or else risk violating their publishers' contracts? If Paizo can keep publishing Pathfinder, but still work with Necro on 4E stuff, what's the difference between that and just starting up a 4E company, keeping it distanced from Paizo, but still selling its stuff in the Paizo store and getting the best of both worlds?
This sounds like a disaster to me. If not immediately, then a few months from now, when companies like Paizo and Green Ronin are going to have their backs to the wall: abandon support of your popular main lines, or force your fans to discard their existing books and buy all new books to achieve compliance with the new system.
This also looks to me like it could turn into a PR nightmare for WotC. I'm not a big GR fan, but I bet there are going to be a lot of people who are pretty pissed off that GR must choose between supporting True20 and supporting 4E. The fan base will split between the people who want GR to move to the new system and write supplements, and people who want True20 to keep getting support. That could endanger GR's existence, and the loss of a quality company like that can only hurt the hobby. Same goes for Paizo, although they'll probably have an easier time migrating Pathfinder since it's a world, not a system.
I strongly disapprove of this measure. I think that some amount of nudging to convert to 4E is probably okay, but not arm-twisting like this. It should be a carrot, not a stick. This "you're with us or you're against us" mentality has a precedent of blowing up in the face of the one making the ultimatum. As a consumer, I take offence at this deliberate hamstringing of companies that are beloved by the community.