Hi! I just stumbled on this list and discussion, and though to just mention a highly speculative, but potentially very rewarding advantage of using LGPLv3 for wine.
According to this opinion at groklaw: http://www.groklaw.net/article.php?story=20070709101318827 Microsoft MIGHT end up being effectively forced to distribute GPLv3 code under the deal with Novell, and hence loose any chance to sue about patents any so licenced projects included in SuSE, and I suppose wine is included in that distro.
Given the nature of the wine project, Im thinking it could benefit greatly from such potential shelding from Microsofts patent portfolio, if things happen to unfold in this very optimistic scenario..
just a thought...