So this project hasn't been outright abandoned, but have had a few other things on my plate which has meant I haven't really continued development.
I'm still looking to complete some designs in F360 and get some quotes once I have the STEP files, but not sure when that will be.
I do have updates, however:
- Lobo block finally arrived last month, after being stuck in the vortex for a long time
-- The EK DDC 4.2 pump is a lot noisier than the DC-LT2 or the D5 pump I had previously, [USER=14936]@Alloy Craft[/USER] suggested shifting the pump very slightly on its mount as if pushed hard against the side, the pump rotor might be impacting the block and causing the noise
-- Performance is pretty similar to the other pumps/blocks I tested, but given I'm running a lowly 5600X that's hardly a surprise (I haven't had time/energy/motivation to do any proper testing / documentation, but if I do I'll post it in here and in Lobo thread)
- I've purchased some other components & cases to try out, none of the cases are working out the way I'd like which reinvigorates my desire to finish the designs...
-- CASES --
- DAN A4-SFX (version 1, same from first post) - the ever-present, classic compact sandwich case
- CM NR200 (bought new for $69 aud) - relatively large, pretty easy to build in but as always have to be aware of build-order
- EVGA Hadron (bought used for $50 aud!) - old school cool, comes with a 500W 80Plus Gold FlexATX PSU
- Custom ~12L ITX case (bought used for ~$100) - very very tricky build, couldn't quite jam the 6800XT with the EK Quantum Vector block in as it's too long, removed the cosmetic end-piece and it almost fits but nearly hosed my motherboard/GPU so abandoned this case for now
-- WATERCOOLING COMPONENTS --
- Alphacool Monsta 420mm Radiator - stupendously big, dwarfs the SFF cases to be honest
- 6x EK Furious Vardar EVO 140mm fans - these go all the way from dead-silent around 900rpm to hurricane at almost 2500rpm
- 4x sets of Barrow TZKMF-V2 Quick-Disconnect fittings - needed quick disconnects, Koolance want $120+AUD for shipping alone, I paid around that for these 4 sets including delivery, but gosh are they BIG (at least compared to the QD2 fittings I have now!)
- Bykski frosted flow-indicator with 3xG1/4" fittings - in case I decide I want a mini reservoir
- Various EK fittings (splitters, rotary T-fittings, M-M adapters, etc.) - so I can attach the various components to each other, can never have too many fittings/adapters/splitters, at least until the project/build is complete 
Will update more as I get around to it. 