Looks great. You guys don't even know the half of it when it comes to ASUS' system. It's literally glued together. Many have small hairline cracks too that cause a drip or two. Someone had their 2900XT 1GB short out because of it.
How does the copper tube seal ? Doesnt look like it can take much pressure tbh and looks quite restrictive for a high flow system
Blocks look nice though, similar to the MIPS and Heatkiller gear and good idea that they have left them tapped at G1/4" by the looks rather than giving you 3/8" fittings already fitted.
Prob find the pipe just runs straight through and is soldered on.
I think its a dam good idea (as long as its real copper...).
XSPC bay rez/pump combo + a 120mm (240 is your case is big enough & im assuming youve got a 360 for cpu) and you've got effective watercooling for the bits that are normally a total PITA.