This doesn't really apply to the project in question here, but one good reason to switch from LGPL to MIT or another similar license is for libraries one might use on platforms where dynamic linking to libraries is basically impossible (eg. a non-jailbroken iPhone). On platforms where static linking is your only option, the LGPL basically becomes the GPL in practical terms.
Comments
This doesn't really apply to the project in question here, but one good reason to switch from LGPL to MIT or another similar license is for libraries one might use on platforms where dynamic linking to libraries is basically impossible (eg. a non-jailbroken iPhone). On platforms where static linking is your only option, the LGPL basically becomes the GPL in practical terms.