Optimum TL for this driver? (GM might want to take a look)

With the risk of becoming the-official-troll-that-posts-a-thread-about-morel-on-diyaudio-every-half-an-hour I'm calling for GM and his magic formula for optimum transmission line for given driver :D
This is the driver http://www.eltimaudio.com/products/MW 164 datasheet.pdf
Just want to check if any improvement can be done to the TL Morelline design that's available with the above driver.
GM, are you still around?