Hi @cicerunner! We interacted briefly on BGG when you replied to my first blog post with very helpful comments. Honestly getting any reply at all was very encouraging and motivated me to make later posts better. I just saw your name pop up here recently.
I only regularly play a few games: Carc, Chinese Mahjong (MCR), Cribbage, Godori. And Carc is the only one that really draws me to the online world, except possibly making a simple Chinese Mahjong primer on BGG...
I love the BGG blog feature as a way to document my favorite Carc variant ideas. One of my posts had 15 "likes" from users all over the world, with a few even taking me up on the offer to send them the needed wooden bits, and that was really cool. But I don't usually get many interesting or helpful comments there (your reply being a notable exception), and the Carc Forums on BGG are very quiet, as far as I can tell.
CarcC has a core group of very knowledgeable, creative, and highly engaged users who post and provide great comments on a lot of variant and expansion ideas in the "Workshop". Many of these are incredible and beautiful custom tiles, which I really enjoy, even if actually fabricating custom tiles is a rabbit hole I have decided not to enter. But the accompanying rules are often adaptable to base tiles.
I also like the CarcC Strategy Forum, and got a few great replies to a post there. But that Forum is not nearly as active as Workshop. I have been thinking about a "Tactical Tuesday" series, similar to @Decar's fantastic "amusing musings" to see if I might wake a few slumbering giants in that realm.
Finally, the CarcC fandom and completionism posts are quite useful, because they help me persuade my family that I'm not as insane as I seem for eagerly waiting months to receive 4 Carc tiles from someone in Spain. Or at least I'm not uniquely insane!