WHAT'S IN A NAME? ... The Main Library in Palo Alto will undergo a metamorphosis in the next few years when its rooms are renovated, a wing is added and the driveways around the Newell Road campus where it's located are redesigned. But there is another major change that the city is considering that wouldn't require bricks, mortar or expanded lanes: the library's name. Unlike the city's Downtown, College Terrace and Mitchell Park branches, the Main Library has a name that is fairly vague, somewhat bland and, geographically speaking, neutral. It implies that the branch is the city's largest, a suggestion that is false (the Mitchell Park library, which is undergoing a complete reconstruction right now, is the biggest branch and the most ambitious of the three library-renovation projects financed by a 2008 voter-approved bond). But what should the city call the library? That's the question that the Library Advisory Commission is scheduled to tackle at its April 23 meeting. Library Director Monique le Conge said the idea of renaming the Main Library came out of a joint meeting between the library commission and the City Council in January. "The idea is that we have several strong neighborhood libraries," le Conge said. "There really is no one central library."