I'll need to reserve other comments for after I get my hands on the (X), which I ordered last Friday. That said, I see no point whatsoever in a front I/O on premium cases such as this. These are the kinds of cases that are an investment, where you reuse them in subsequent builds over time - and the open nature of the case allows you to do that.
My Silverstone SG03 (finally upgrading from it after 12 years) makes the point (it literally has reached EOL in my eyes - finally).
Who uses Firewire? Who uses USB 2.0 (or even 3.0 with the F refresh)?
Who wastes their time using the front audio jack or the audio mic?
Who uses tons of internal storage when there are a myriad of external storage options today?
My draw to this case is it's open nature - it ditched the antiquated "cage" design of generations before.
Also, I cringe at the notion of people saying cases need to be bigger (on a SFF forum no less). Things shrink over time - they don't get bigger. In other words they want to use a cooler designed for large tower cases in an otherwise SFF tower design - so lets just make that SFF case bigger? You lost you mind.
If the Cerberus or the (X) are too small - you likely have the wrong size case. Not sure I see the value in an (XL), but I digress, that is something for the case builder to ponder.
I guess I lost my mind. However...I'll address some of your concerns.
"... I see no point whatsoever in a front I/O on premium cases such as this. "
It depends. Front IO preference depends on the user. I find it useful, and many of the premium cases allow you to upgrade the module. Additionally, some mainboards have so few USB ports (I'm looking at you MSI) that they should come with a hub out of the box. I have cases both with and without front IO. I like being able to just plug something into the case easily, but I do sacrifice it for certain cases for looks. I like to have the option at least.
"My Silverstone SG03 (finally upgrading from it after 12 years) makes the point (it literally has reached EOL in my eyes - finally). "
Great case. I still have a few Silverstones for my older machines. Silverstone makes good stuff.
"Who uses Firewire? Who uses USB 2.0 (or even 3.0 with the F refresh)? "
3.0 is still quiet useful. Everything else is depreciated tech.
"
Who wastes their time using the front audio jack or the audio mic?"
This guy! Though only rarely.
"Who uses tons of internal storage when there are a myriad of external storage options today?"
External storage of which type? Most NAS units are capped to a functional 125MB per second when hardwired. External hard drives are, for the most part capped to 1000MB per second over short bursts for NVME drives. If you need more bandwidth than that, you need internal storage. Plus you clutter up your setup.
I prefer having fast local storage in the form of NVME drives. I have 5TB in my main machine, and my editing rig has 5TB as well. I can easily use all of that up. I have two NAS units but unfortunately don't have wired networking in my location except in one room. Additionally, sometimes it's just easier to have your files locally on the machine. Providing it's backed up, it becomes one less point of failure in the data chain.
"Also, I cringe at the notion of people saying cases need to be bigger (on a SFF forum no less)."
Case adjustments get made all the time depending on hardware requirements. The Cerberus and Cerberus XL design itself was to move to a bigger case design to fit bigger hardware. Otherwise we would all be using Dan A4-SFX units or laptops.
"Things shrink over time - they don't get bigger."
Tell that to the latest gen of video cards. Very few 3080s or 3090s fit in the traditional 2 slot form factor. ITX sized cards where paper launches at best. CPUs are hotter and larger as well. When many legendary cases launched they were dealing with quad core CPUs. Now mainstream has hit 8, 10, 12, and even 16 core units that pull a lot more power, and have larger packages. The L9A simply can't handle these CPUs and that was the cooler many of the cases were designed around.
Even DonDan, who made the legendary A4-SFX, isn't designing anything anymore with just a 2 slot GPU or 47mm of heatsink space. Users of the Ghost S1 and CCD MI-6 are struggling to get GPUs that fit, and air-cool their CPUs now. Making slight adjustments to keep a case relevant is just part of the design process.
"You lost you mind."
I'm just ahead of the curve....