Well Gunnar,
At least let me welcome you to our Forum!! While it's always nice to welcome new members, it's also frustrating to realize that we're kind of at a temporary roadblock with our somewhat dated technology.
Hopefully, someone will come up with a suitable application that suits your needs.
My personal take is that there are chatbots, of which UltraHal is one of the better ones.
There are many types of Home Control / automation device platforms (X-10, Zwave, Insteon, Zigbee and others....).
There are many software sources with which to control the devices (Active Home , My Servant, iHouse, Smart-i, BVC (Bill's Voice Command), HomeSeer, Hal2000, Vera, Control4 and many others.
There are many voice controlled assistants to provide factual, up-to-the-minute information (Google Now, Assistant, Siri, etc.)
There are some new entry devices that work with voice command to connect you with your home (Cubic, Jibo, EmoSpark Cube, Ubi, etc.) .
So I guess you / we really need to ask ourselves, what it is we wish to accomplish, why, is it practical, does it fulfill our needs, is it what we really want)?
Just throwing my take on "connectable things" for you and others.
Good luck either way and why not just keep Hal for experimentation in the growing AI environment and have fun with it and our community of users!?