I think the 2011 design is one of the better ones in the series. Of course, I am okay with the 2013 design, it just doesn't fit with the rest of the series. 2012 is just fugly.
Perth Mint certainly have failed to recapture the artistic skill of the early series Kooks. That is the benchmark - anything below that standard is a fail.
Their claim to 'ordinary' and 'sub par' artistry in this era is well and truly attained.