To give this question a fresh start:
We define ourselves as a community of graphic designers. The question I ask here is: Does this include 3D experts? More specifically, by 3D expert, I mean people who are good at creating something with 3D software and similar tools (but if you have another good definition, please share it).
Why put the focus on the community?
Stack Exchange sites are primarily defined by communities, not by topics. Often this distinction doesn’t matter, but I do think it does for defining our scope around 3D questions.
Many previous meta questions yielded a consensus along the lines of “3D questions are okay, if […]” I do not see how this can work. If we want a subcommunity of 3D experts, the askers have to feel welcome on our site and the experts must be entertained. We cannot make them second-class citizens that have to restrict themselves to a gerrymandered niche of our scope, when everybody else does not. Otherwise it is no wonder if 3D tags will be a deserted wasteland. (Note that we may have a 3D wasteland despite this – which would be a relevant argument.)
As outlined above, if we accept 3D experts as part of our community, we have to accept the entire repertoire, i.e., people learning their first steps with 3D programs up to highly specific questions, and from conceptual to rather technical ones – just as we do for 2D questions. The main restrictions of scope will be like for 2D questions: Is a 3D expert a good person to ask this? This does not mean that we cannot have any 3D-specific rules ever, but we have to first open the door and then possibly close it a bit and not the other way round.
On the other hand, if we reject 3D experts as part of our community, we have to draw a clear line – at least excluding all question about 3D software in general. We cannot cherry-pick a few questions that we like.
If you answer, please address the following questions:
If you answer with yes: How can we populate the subcommunity of 3D designers? Will just being open to such questions eventually work to attract experts or do we have to do something else? Also: Will there be sufficient overlap between 2D and 3D designers to avoid two parallel communities?
If you answer with no: Where can we draw clear line(s)? (And “it has to be about design” is not a clear line.) Does just banning 3D-software questions suffice?
If you answer with something in between (e.g., “3D questions are okay, if […]”), please address the above problems and make sure that your answer contains a clear and actionable policy (or at least steps towards one).
Of course, some of us are experts on both, 2D and 3D design. But then some of us are also experts on other topics like UX, freelancing, anthropology, or physics. A crucial question here is how big natural the overlap between the two communities is.
Previous attempts to start a separate SE site for 3D software in general didn’t work out. To be blunt, this is not our problem. We only have to decide what our community is.
Should we opt for yes, we have to decide what to do with questions about Blender, since it has its own dedicated SE site. This detail can be decided separately if the need arises.
Similarly for no: Technical details such as what tags to blacklist, what close reasons to adapt, etc. can be decided later.