the risk will be the specialization of a general purpose forum... it will eventually become 90% [IoT] related, so finding general B4J info will be more difficult.
One word about Forum Moderation...
I've been here for about a decade, and during all this time, you, Erel, have taken the Forum Moderation as a personal task. while I can understand why, for the main Forums, the lesser subForums, like the eventual [IoT] subforum, could be moderated by a trusted user (not me!!!!)