That's nice. I honestly thought it was just another of those "meh" cabinets and wondered why you paid so much for it haha

If I ever build a media PC I will definitely consider it. I was actually thinking of making a custom HDD rack as I tend to always run out of storage and couldn't spend thousands for a harddisk at one time. A relative of mine who works with media files is also facing a "too many hard disks not enough slots in cabinet" problem.
This would be an awesome cabinet if the external design is modded for aesthetics.
Cost of the chassis is 12K inclusive of GST + shipping extra. Its not that high compared to other chassis that you can get for around the same cost.
1. Removable E-ATX motherboard tray in horizontal layout.
2. Dual PSU support. With single PSU, you can chose between left and right install and cover the other one with supplied grill with support for a 120/140mm fan.
3. 2 x 480/420/360/280/240/140/120 radiator/fan mounting at the top and one on choice of either left/right side. Alternatively, 2 x 200mm fans at the top.
4. 360/280/240/140/120mm radiator or fan mounting on the front. Alternatively, 2 x 200mm fans
5. 3 x 5.25" bays which can optionally be removed for radiator/fan installation.
6. 2 x HDD rack each holding 3 x 3.5" HDD, 1 x 3.5" HDD rack under the motherboard tray. The racks can be mounted to the left or right side or one on each side.
7. Removable front I/O panel which can be mounted to the left or right.
8. Side panels can be swapped from left to right. So, if you have the chassis on the left side, you have the side panel with the acrylic window to the right side of the case.
What I would have loved in addition.
1. Aluminum instead of steel.
2. Better front side design where we can have a column with 5.25" drive bays and another with radiator/fan support which can both be swapped to either side.
3. Ability to rotate the motherboard tray by 180 deg.
4. Slightly more width, less depth and better cable management.
If you are just looking for HDD storage, a Full/Ultra tower case with lot of 5.25" bays would be better. My old case has 12 x 5.25" bays. I can have plain HDD cages or hot swap cases to accommodate up to 16 x 3.5" HDD. Unfortunately, these kind of cases don't seem to be around anymore.