I looked at it today. As a single part of an overall classifier I think it's fine and looks basic and fun, but as the sole test to determine someone's level it tests a very narrow set of abilities and is not representative of a shooter's overall ability in pistol competition.
Also, the times listed need to be overhauled but that is a whole different can of worms regarding what IDPA defines as a "master" level shooter (assuming no misses you can make it with a lethargic 2 second draw and .4 splits here). They get the benefit of the doubt on that though since it's obviously just a theoretical test at this point.