I'm not getting into the argument other than to make the following observation.

It *may* be the case that manufacturers view the P55 market as a "mainstream" market in which they will not make any sales. However, it may also be the case that full-cover blocks for P55 boards are not entirely viable.

The reason full cover blocks on P45 and X58 boards are so popular is because it became a chore to route tubing between 2 MOSFET blocks, a NB block, and a SB block (or.. bling, whichever you prefer). However, with the advent of P55 boards there is no longer a NB to cool. This leaves the MOSFETs and the SB - between which there is quite a large distance. Seeing as how the SB doesn't really need cooling (and may see a RISE in temps from relatively hotter loop water) manufacturers may have decided that full-cover blocks were unnecessary in this case.

It would seem that this theory fits the facts based on EK's P55 block set. This set includes an L shaped MOSFET block that eliminates the need for 2 MOSFET blocks, giving a "fullcover" feel. It also includes a SB block. I have this set and have been wondering A) Is it even WORTH cooling the SB? and B) How the hell will I be able to efficiently and cleanly stretch my tubing route all the way over to the SB?

The fullcover argument will die in a processor generation anyways. The NB is gone and the SB is soon to be swallowed up, leaving nothing but the MOSFETs... Enjoy your fullcover bling while it lasts.