Oh I know nothing is compatible with X-10 these days, and quite frankly, I'm ok with that, X-10 has too many issues, too many limitations, not to mention the technology, though slightly updated throughout its lifetime, is still over 50 years old.
However the one sorta strength was in its simplicity which was just side effect of the technology, the simple device address, on/off command. I've been watching the home automation space for a while, and it always seemed that promising new stuff came around, Insteon, Z-wave, Zigbee, etc.. I was always really close to pulling the trigger on something, but there were always issues that came up, I have a bunch of Insteon/X-10 switches, but they turned out to be a bit fragile, both physically, and in the electronics, so never made the switch to Insteon, which looks to be a very good decision now, and makes me even more determined not to get locked into a single companies proprietary solution.
Yes, you are correct, taking a step away from what I know, and learning something new is always going to be a pivot point, but mostly I don't want to sink a bunch of money into something that ultimately doesn't work for me. I really don't think that's the issue here, more that there are a limited set of options for the specific way I want the system to work (i.e. hardbutton remote similar to X-10 palmpad), without having to add additional hardware and translation layers from one protocol to another.
Again, not sure why these solutions seemed to be available, but are now not very numerous, without having to add more bridges to different protocols/technologies. Part of it is the unfamiliarity of how HE actually works, since I won't know that until I actually get one, I just want to have as much understanding as I can get, before I buy a bunch of hardware.
My current needs are pretty basic, just remotely turning on and off lights, and fans, at least for now. Once I get that working reliably, then I might start looking at more fancy stuff, like HVAC control, fireplace, etc.
It does look like at least in the US, the hard button remotes, are for the most part limited to what I initially posted, and possibly a couple more, which I was hoping there were more but are either discontinued or a victim of the chip shortatge (like the Aeotec Nanomote Quad, the Wallmote Quad is to pricey), but it doesn't seem to be the case, I'll just have to pull the trigger on one, and hope it works.
Ehh, sorry for the long ramble..