That's good to see.
Even some of the bigger brands like Corsair and Fractal are skimping on steel thickness these days!
They often make so many overcomplicated hinges, latches, covers, frames and trays that they have to cut costs somewhere. So the steel is first place to look for savings, as most people will not notice... to a point. That's why I actually appreciate straight forward designs like this one, trading these 'features' for something actually useful. I wish bottom dust filter was made on a plastic frame, though some reviews showed it is easy to slide the filter in from the front, without tilting the case or anything.
I almost wish this case came with less fans to drop the price a bit, because its also quite compact for that EATX support and might be begging for a higher end build.
My only real gripes is the poor 3.5" support.
Basic fans are rather cheap. 10 EUR (or so) they could save would not be a game changer here, but would deprive them of a popular selling point (AiRfLoW).
I can see where you are coming from with 3.5" HDD support. I wish there was a HDD cage in it. But is it really a downside for average person? 2.5" SSDs are available for as cheap as 3.5" HDDs nowadays. And I feel like this argument can be extended indefinitely - why not put space for 3, 4, 6 or more 3.5" drives while we are at it? ¯\_(ツ)_/¯
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The simplicity of the design actually excites me. Lack of any useless custom trays or frames, bequiet!, Fractal and Phanteks accustomed us to. Just simple, standardized, easy to access hole patterns: 2.5"/3.5" drive and 120/140 mm fan mounts + ATX holes with set of additinal, straight forward, easy to measure, universal slots. Clean 360 + 240/280 rad custom loop should be easy enough to put in it as well. I wonder if rubber grommets are big enough to feed water loop lines through them. If they are, pump could be mounted and hidden under PSU shroud using 120 mm fan holes there, making it even cleaner.
Holes under the MoBo could be made smaller or with some rubber grommets in place, fan hub could have more PWM plugs and SATA power, better dustfilter at the bottom and HDD cage could be included, rear fan put lower by default. But I feel like all of these downsides are really small and should be easy to work with.