Optical drive isn't needed, of course, but there is a surprising (to me at least) number of people that still use them. I also think the sort of users this will appeal to is more likely to be in the ODD-using group; I could see this as a living room media PC, for example.
From looking at the renders, I could see a possible issue with the ODD interfering with the power cables for the GPU, and also possibly limiting some taller cards from fitting...
Maybe the fastening points are on the inner chassis for an ODD, and optional top plates (slotted or un-slotted); you know, like on the M1...?!?
Sandblasted is a bit expensive compared to brushed, but it could be an option. At least there are fewer panels here than on the M1, so perhaps the cost might be a little lower than it was when we looked into it for that.
Mmm, that sandblasted look though...!
Well, this is just a concept right now, and I think you know how I am about dropping projects. Usually it's because I can't resolve things the way I want to once I get into the weeds of the design work, or I reconsider some fundamental aspect based on new data or market shifts. Consider it to be just a concept exercise for right now, and not anything close to being released. However, I will of course take comments and criticism, as that will help me make a decision. Any comments about what you like or dislike are good, and help me to gauge interest.
Well, I think this one could have legs, don't give up...!
Bottom line though: don't wait for this over another case if that'll meet your needs. W360 has spent the past several months getting the MachOne to a near-production ready state, so if that does what you need and appeals to you, by all means get that when it's out. It's also worth noting that you can build a perfectly capable air-cooled rig in it -- compatibility is similar to the M1 in terms of CPU cooler height, with potentially better airflow for open cooler GPUs thanks to the dual 140mm front fans. Certainly more capable than this concept (as you'd expect for the 5+ more liters).
While I agree the MachOne would make an excellent air-cooled chassis, it really is (at least in my eyes) designed for watercooling, what with the space up top that perfectly fits the EK DDC 5 1/4" bay pump / res combo & the perfect fitment up front for dual 140x25mm fans & 280 radiator...
But that watercooling comes at a price, and not just the cost of the WC components themselves...! I would want to place an i7-8700K & 1080 Ti in there, to make best use of the watercooling...
With your new Tall Cube chassis, I would go with an i5-8600 (non-OC) & 1070 Ti; a NH-L12S & the extra heatsink of the 2.5 slot GPU should be just fine in there, with a 140x25mm (Noctua Chromax) fan exhausting up top...
As an aside, what PCI riser cable would you plan to ship with...?