Fellow KS Backer here of the Almond+
I've also (surprisingly) stuck with it through the thick and thin, however my setup has evolved and changed.
Here's my opinionated $0.02 on the current state of affairs:
The Almond+ is a bit of an odd bird in the Securifi lineup. Ahead of its time at launch, The Almond+ still incorporated the whole touchscreen concept in an attempt to make it easier for newbie users. Unfortunately, HA was, and continues to be, not easy. Device incompatibilities, different versions of protocols, and range/interference problems are enough to cause most non-technical folks to drop it all. So, the touchscreen is pretty much wasted on the userbase willing to put up with current HA deficiencies - technical folks who want more than 20 IP address reservations in DHCP (which I can almost guarantee is an acronym the targeted audience for the touchscreen use case wouldn't know what it means).
Second is the cost. The Almond+ cost a lot in R&D money. You probably recall how Securifi started out with one hardware platform, and then changed it because it was going to be far too slow. As at time of launch the Almond+ had a fairly powerful SoC and a non-trivial feature set to integrate into a thermally constrained cavity, and do all of it without basically being an RF storm. It's still Securifi's fastest wireless implementation with AC1750 and 3x3 MIMO as well as two USB 3.0 ports (which, as Shazter pointed out, still don't work correctly) and 4 GigE. Combine that with integrating Z-Wave, which is a closed standard with somewhat expensive licensing fees, and the Almond+ begins to shape up as expensive hardware all around.
Then there's the less tangible costs. Having all these features requires more testing. Z-Wave and Zigbee integration means trying to integrate thousands upon thousands of popular devices to be supported. Then there's the cloud and app platforms that debuted with the device.
So we have an expensive piece of hardware that does all this whizbang stuff that winds up driving its price range out of the range of someone who might be like "I've never done this HA thing before, lets try it out" and then, even if they have the money to throw at it, they'll probably get fed up with the general state of HA.
In short, I can see why they went the route they did with the Almond 3. Shrink the supported device list and feature set so they could focus on the software and device support. Going with zigbee means cheaper devices (even if IMO the protocol is inferior with mesh network generation, healing, and speed). Cheaper devices means Securifi can start to build up its own line of devices that they can then certify as "guaranteed to work", further improving the HA user experience, and making the touch screen of tangible benefit.
So, what's the future?
My guess is the Almond+ will live on for a few more years. Most people still are only running 802.11n routers, so upgrading to an AC1750 is still a giant upgrade. I would expect a revamped OS at some point because, as mentioned, the underlying OS is super old.
I would hope that they just drop the touchscreen and making a truly prosumer model. The apps are great, the HA is reliable these days once configured correctly, and I'd rather they focus on improving wireless coverage and routing features rather than having a backlit touchscreen causing heat issues inside the chassis. I personally have relegated the Almond+ to purely HA tasks these days, as I moved on to using a professional wireless AP system which supports AP handoff and uses ethernet for network backhaul rather than all these garbage extender setups which use wireless for their backhaul.