Thanks! I totally agree, but catering for an ATX PSU would significantly increase the volume of the design.I'm really liking the 3rd design. Having the option to watercool the CPU / GPU is a huge plus. I see a lot of SFF enthusiasts aiming to push the most out of their small rig, and I'm sure they'll appreciate the feature. For me though, the limit of 245mm GPU is the greatest addition. No longer would you need to limit yourself to ITX cards as even standard* ones (e.g. Sapphire Nitro 480) rarely exceed the limit.
The only thing I'd like better is to have the ability to put in an ATX PSU. Nothing's wrong with SFXs, but as with standard*-length GPUs, the standard* for PSUs are still ATX. Having the option will really make it a no-compromise case. So far the NCase is the only SFF that has managed this feat, but it's definitely not as small as the LZ.
* I know there's no standard for these, but the majority of things in the market fall not far from certain sizes.