So, what should we do with the K Type to make it better suited to your desires?
Honestly, right now, it's just completely wrong for me. Everything would have to be changed-- form factor, materials, feature set, switch technology, etc.
Having to use a separate number pad is an instant deal-breaker to me. Non-negotiable.
Aluminum isn't worth anything to me. It's just "that crappy stuff I've had on Apple products that looks harsh, feels cold, dents easily, and is always getting sharp edges and corners as it gets banged up". Good plastic is nice. Wood is nicer (not for the plate, though; that should be steel).
Programmability is useless to me without some extra keys to program. If I have to switch layers to use a macro, or stretch my hand to hold down a modifier key, which will then also affect whatever other keys I happen to be holding down at the same time, it might as well not exist. And I'm definitely not going to compromise regular use by binding over the normal functionality of a standard key.
For all the talk about tolerances and manufacturing techniques, I don't see mention of the attributes I'd need to feel comfortable investing in a $200 keyboard, like waterproofing and dustproofing. If you're going to charge twice what I paid for my Hall effect board, you don't
also get to ask that I give up coffee for the 12+ hours a day I'm at the keyboard. Hot-swap sockets mean that chattering switches can be replaced (at the cost of buying a new switch), but this is 2017, where, for well under $100, you can get an optical-switch keyboard that's immune to chatter in the first place (and waterproof, and dustproof, and supports stem swapping).
Seems like there's a lot of hype behind these "Halo" switches, but, mechanically speaking, they're still based on the MX design. They're not BS, or ALPS, or any of the various non-contact types. That's fine, if your product is cheap and/or has plenty of other reason to exist. So far, I'm not seeing that here.