Those fans are in push-pull. They're actually quite good for airflow. The greatest drawback to the entire design is the finstack being way too small. Also glad you think the Leadtek cards are ugly, spread that message so people stop charging twice as much for their cards! Those of us that like these are sick of paying a premium.
See you say that but yet I find more old AIOs just low on coolant from lifetime evaporation, and not gunked at all. Those older closed loop systems basically use antifreeze and are both single-metal systems and chock full of bio killer. I recently pulled a TT Tide Water GPU AIO out of an ewaste shop, still functional, no gunk, a bit light on fluid. 16 year old AIO.
Man you are just full of hot takes! You might not want to scroll back in this thread too far, there's a lot of GPUs people get excited over that you'd HATE to see. I'm not sure I can even suggest a hideous GPU to answer your question of which one is the worst, because you've shot down all the ones I think look good so far. I guess go look at the old ASUS ROG cards like the 8600 GT/GTS?
GYSOT !!!! 