Back with newsgroups the general rule was to go from general to specific. You start with a general discussion group and when discussions about video games get annoying you create a games group. If then there are too many Baldur’s Gate discussions you create BG. If they are dominated by Baldur’s Gate 3 you create a Baldur’s Gate 3 group. If everyone is fawning over Withers you create a Withers group which of course will be flooded with discussion about the Withers’ tits mod, which shall get its own group.
Meaning you should create a group when demand is there and not the other way around.
I agree, but at the same time there is something as community building fatigue when you see another community getting most of the activity.
I stopped starting to grow !photography@discuss.online because of that when I saw that !photography@lemmy.world was getting most of the posts.
Also hopefully by this week-end the LW and aussie.zone delay will be solved (more details on !meta@aussie.zone)
There’s also the other case where you start a comm on a smaller instance, and then later on someone starts the same comm on l.w. and gets by default more activity >_<