I am against changing the name, and here's why:
1. The name doesn't really matter much, does it? (look at "Delphi" for an example. WTF has the Greek oracle to ObjectPascal programming, anyway?);
2. The name, actually, isn't just "Lazarus" - it's "Lazarus/FreePascal" if you want it to be a match for Delphi. Now that's quite an informative name, IMHO;
3. The current name is actually more widespread than it seems - let us not make the Borland/Inprise/Borland mistake and cause confusion to users;
4. The change would be simply pointless - why bother, anyway?
5. The name "PowerPascal" is definetely a bad one - Lazarus *is not* a Pascal compiler nor a Pascal language implementation/specification. Lazarus is "just" and IDE, component library and widget bindings. "PowerPascal" would, again, cause confusion, and we would rather evade it, now wouldn't we?
Cheers
Mike