Out of those I'm thinking the External Antenna is the most interesting. I would also like to see an upgraded Zigbee chip... (802.15.4?) and maybe Z-Wave 800 series..
Given any hardware changes at the manufacturing level would likely need re FCC certified, that could get quite expensive. Also there is current supply chain to think of as well. Not to mention the initial engineering cost.
Yep an experience they are well aware of I'm sure.. hopefully the sales etc are good enough to warrant/risk such an upgrade though.
Even if things like Matter/Green Power/etc are not immediately useful building this in now can future proof things enough so you won't have to do it again for a while.
Also you probably want to get ahead of any supply chain issues by getting your orders in well in advance and not wait...
This is pure speculation on my part of course - fun to think about.. Also not expecting a new hub anytime soon anyway.
But the hardware capable of supporting it is right? I mean technically newer Zigbee chips? The rest is just software implementation. I am not experienced enough in this to speak intelligently - loudly sure but not intelligently
Matter
Zigbee 3.0
Wifi
Bluetooth
More memory (or ideally fix the memory leakage)
Stronger antenna
Ability to run Node Red directly on the hub as the Rule Engine
Furry kittens
End Covid
Love and justice for all
Matter is software. Thread is hardware. Most newer Zigbee chipsets can -in theory- be flashed over to Thread. I believe the C7 has older Zigbee chipsets. Not sure if any chipsets support simultaneous Zigbee and Thread. Thread stuff is already shipping for Apple HomeKit. There were several more products announced at CES.
Zigbee/Thread chipsets seems to be OK for supply. Z-Wave 800 not so much.
I know you didn't request this yourself, but in my experience the hub is really fast. Here's an example of one of my automations that uses three hubs on the same gigabit network switch:
C-5 to which a zigbee motion sensor is paired.
C-7 to which the motion sensor is shared via Hub Mesh, and it has a motion rule (created in RM 5.1) to control a Caséta dimmer.
Lutron Caséta Smartbridge Pro to which the C-7 has a telnet connection.
So despite involving 3 hubs (admittedly on the same switch), it takes just ~150 milliseconds from motion being detected to the light being on.
For me, walking into the room, it just seems instantaneous. How much faster would you want this to be?
Edit: To be clear, that 152 msec also includes the time it takes the Hubitat to register that the light has been turned on by the Caséta bridge after the light has been turned on. So the real time from motion detected to light on is probably closer to 130-140 msec.