This was the old X10's forum which they seldom commented in. When they went under the forum stayed online because (as I understand) it was handed over to the users. I don't know who was paying the bills to keep it's hosting, but when Authentix bought the assets, they let Tuicemen run the show here. The new owner of X10 started investing in upgrades, but unfortunately passed away leaving the assets to his spouse and brother (I believe) which is around the time the WM100 fiasco got out of control. If you look back at the time just after Authentix bought X10, there was actually a number of improvements made.
As I recall from reading various threads, Jeff tried to get Authentix to take on his products but I don't know the timing, so not sure if that was during the initial surge in product development, or after the WM100. Either way, the ideal solution would be Authentix taking on Jeff's products and also talking to dhouston about his work. None of that is likely though.
As for the ESP projects, I'm a little confused. Tuicemen said months ago that he wanted to add some sensors to his RPi but wasn't interested in anything other than directly plugging into the GPIO (which had to be pre-installed). A breadboard was too much at that point. However, now the HG-mini is a serious consideration. I looked at that project when it was originally posted and again recently. The project requires building your own controller based on a board you have to have custom printed and find a source for all of the components all of which will need soldering together. IMO, a breadboard is a very simple way to prototype but it's considered complicated and yet these other steps are worth playing with? I guess I'm just looking at complexity a little different, but it seems like a simple breadboard circuit with provided code on the Arduino forum would be a better starting point than trying to duplicate Gene's custom board (at least as a first project).