Or QM's level history (<a href="/index.pl?node=QM;displaytype=xml">QM's level history</a>), for those who have a unique page name as their username?

Or perhaps more canonically QM's level history ([href://?node=QM;type=user;displaytype=xml|QM's level history]), for those who don't?

But you still have to search for "levelchange".

As stated earlier, this only works for the logged in user. Non-you targets get something, but not everything, and not the levelchange: Not tye's level history