You're right for benefits. But will wine have the same behavior as before ? In your example, the symlink for regsrv32 is replaced. We could have a functionnality loss : will the regsrv32 still be built-in without its symlink ?
However, some applications needs to replace this files.
I noted this with the Internet Explorer Installer (5.01 sp1 and 6.0). If it cannot replace the c:\windows\system\regsrv32.exe file it will abort.
However, as the c:\windows\system\regsrv32.exe is a symlink and wine has permition to move/delete this symlink, I would link to suggest that wine first delete the symlink file when an application tries to write on it.
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