I have personally always been a huge fan of the BSD license. It has always seemed to me to be more about standards.
I know you guys are angered about TransGaming making their WineX version, but get over it. TransGaming is more than willing to place code back into the community. They are just making sure they can cover their own asses too. With the current state of open-sourced companies and internet companies in general, I think they have a decent plan.
Also, switching to the LGPL will not make it impossible for TransGaming to make WineX. This has been discussed on the SDL list lately. All you need to do to make a closed source version of a LGPL library is have the LGPL library make calls into a closed source library.
The theory behind the LGPL is fairly simple. Make sure that the LGPLed library can be recompiled if one of its dependancies either stops being made or changes dramatically. Basically, it's there to make sure things link 5 years from now.
This will probably be my last message to this list as I am dropping it and going to the Mono project. Have fun!