Everyone needs to back up.
First of all, you cant compare the OGL to the GSL. They arent the same.
Really, you should compare the d20 STL to the GSL. And they are basically very much the same. The OGL let you use the SRD without the restrictions or the benefits of the d20 STL. The GSL is really 4E's STL not its OGL. So if you compare those, the differences (now) arent that significant. In fact, most if not all of the terms the people are complaining about are either identical to or similar to terms that have been in the d20 STL for years which we were all using and which WotC never used to screw us.
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I agree that you can't really compare the OGL and the GSL. Apples and Oranges.
However, one distiction (at least in my mind) is that under the D20 STL that was purely a license for a logo and not the content. The content was governed under a different agreement. If wizards changed the D20STL and I didn't like it or I was in violation of the D20STL or they simply rescinded the license then you didn't have to worry about if you could still sell your product. You had a short term "what do I do with current product" but you could release the exact same product without the D20STL info and logo. Today if the GSL get's revoked (I don't buy into the evil corp out to screw you stuff), you terminate, or you are in violation. Then you can't keep selling that exact product like you could previously by just removing the logo. I don't see this as good or bad, just a term of the license. This shouldn't be a problem unless there wasn't a whole lot of creativness going on with the product. You should be able to adapt your IP to a new system.
This is where a 3PP's business savvy would need to come into play to determine if that was acceptable. I don't publish so I don't know what would be acceptable but from the look of things it does seem acceptable with more 3PP's now.
My personal opinion of the license is that it is much improved and much easier to use. If I were to get into the game I'd develop under it. I think the best thing to do if you want to publish under it is to forget that the OGL and D20STL ever exsisted and move forward. The GSL and the OGL/D20STL are for two different properties and the terms of one shouldn't be used to throw stones at the terms for the other.
gil