I know the Deathstalker wasn't well received, but over the years the brand has significantly increased it's capability to build higher quality components, which was the major detractor for that keyboard (and likely it's lack of sales)
The keyboard I dream of is made from parts pulled mostly from the Razer parts bin, using the 2019 Blade 15 keyboard (including the fn key backlighting), in a thin flat black aluminum slab with no number pad. Bluetooth for on the go, and USB-C for charging and data swap for low-latency gaming.
Chroma enabled would be amazing (but not required), and for the extra battery to support RGB, extend the front of the keyboard out a few cm as a wrist wrest.
The perfect travel keyboard would be fully flat, top and bottom, but for ergonomics would include sturdy feet that fold out to two positions: low and high. Packing flat is important in bringing the keyboard for extensive travel. Note that the rounded shape on the back of Microsoft Surface and Apple wireless keyboards isn't ideal, as the angle is fixed and it doesn't pack flat into luggage.
I imagine this could be made mostly from the parts bin... Using the wireless controller/battery/charge controller from the new Turret, and adapting the 2019 Blade 15 keyboard into a metal chassis. Even the off switch can be pulled from the Blade 15 or Stealth and we'd be happy and still on brand. Etch the Razer logo like the Blade Stealth lid, so it can be used for business function as well and not need another part.
In the mean time, I'm going to have to try a Hexgears X-1, but I hope that Razer will make the portable keyboard to end all portable keyboards
PS: Some may ask, "What's the point, if you already have a laptop with the same keyboard?"
-- It's about ergonomics using a laptop as a primary work machine. Having a wireless keyboard and mouse allows the laptop to be raised up on a stand (or books, boxes or whatever opportunistic way arises) to bring the display to eye height. It's far more comfortable working day in and out not looking angled down at the display, but instead keeping it near eye level, and encourages better posture and comfort.
Also, it's worthwhile to mention over the years I've gotten a preference for chicklet style keyboards rather than full mech
