Interesting new information - I was not aware that the Apple TV could act as a remote gateway for bluetooth connected devices. Until now, have only seen it described as a remote gateway for WiFi devices.
(My own testing has been with WiFi-only devices). Of course, the fact that you could not get it to work casts some doubt, but since El Gato tried to help you, one must assume it at least works in their lab or for other people.
Right now, HomeKit is in its' infancy. The primary benefits -- devices security with end-to-end encryption, standardized device database, multi-vendor interoperability (theoretically), and Siri voice control, are unique -- no other home automation platform or product is attempting to provide all of these capabilities.
Unfortunately, at this time, HomeKit-integrated products are far inferior to the existing vendor-provided solutions or established/mature solutions (Indigo software or ISY controllers). This will change as the technology matures.
It will certainly be interesting to see what, if any, additional HomeKit features will be introduced by Apple when the new/improved Apple TV, widely rumored, is introduced in a few months.
Will Apple offer it's own home automation user interface/control software? Will Apple offer any home automation sensors or control modules? I think that's the billion (with a "B") dollar question for the future home automation market and the level of Apple's participation.