There are no cooling restrictions for a M-STX board if you use an Akasa case. And 180W settings are not new, my H470M-STX had them too.
I know that this case model has no restrictions (if you don't put the top), I bought 2 of them for my old miniPC configs using X300M-STX motherboards (from DeskMini X300), these cases have good advantages such as: the RESET button (it's the only model available to have one), the 2 additional USB2.0 (TypeA) slots on the left rear of the case, the location to place a 50mm fan on the left side (but hey you have to replace the original one which is somewhat weak for my taste, personally I had put 50mm with 38mm thickness and of course set to low speed otherwise here is the turbine noise and therefore at low speed it remained silent and I got about 20CFM of air flow that the RAM sticks greatly appreciated
) and otherwise the last positive point is the extra empty space on the left of the motherboard that allowed me to install my USB2.0 doubler Hub (allowing me to install both my 2 additional USB2.0 ports and the official ASRock ARGB kit on the first line and on the second line a custom fan speed adjustment Hub and ARGB adjustment from Cooler Master).
But despite all these advantages there are still some disadvantages: installing ASRock A300/X300 motherboards is a real pain because of the chassis which is a bit too tight/compacted (especially the part of the metal body advantage and this even by removing the front plastic facade), the spacing under the motherboard is a bit limited (especially with the threaded rods used to tighten/fix my Thermalright AXP90-X47/X53 Full Copper heatsinks which protrude a bit too much) and the dual USB2.0 Type A extension cable which is supplied as standard which does not have the right spacing between pins at the level of its 9pin-header connector;
Otherwise I also tried the other model of mini-STX compatible case, the Silverstone "VT02" which has other advantages but especially many more disadvantages than the AKASA Cypher ST...
But it is really a shame that the case brands have not developed and released more models of mini-STX compatible cases, I know that it is a bit of a niche market but they would still have had a significant number of buyers. Besides, Silverstone had planned to release (and had shown them at Computex) a few years ago the "VT03" and "RVZ04" models which were significantly larger and bulkier because they were also designed to accommodate STX motherboards with an extension for MXM format graphics cards, and therefore which would have offered significantly more possibilities in terms of maximum heat sink height, ventilation and modifications/customizations of all kinds, but unfortunately neither model was released in the end
.
So personally I'm actually on a 3D printed case for my current DeskMini X600, the "Lander 55", and I plan to migrate to another model of 3D printed case offering more possibilities for what I want to do and which was designated by a very competent user of this forum, the "DeskStudio TALL", I already have the plans, more than to go to a shop near me that deals with 3D printing because I unfortunately have neither the knowledge in this area nor even the material for it
.