I am against this proposal for several reasons:

• Wikidata is structured around concepts. Datasets are usually structured around the same data for many topics.
• People are already now having issues understanding the above and want to upload their spreadsheet to Wikidata. This would further make this really hard to explain and understand.
• We can not have a mix of licenses which would surely be expected if we go along this path.
• We are there to expose the data we have in a uniform way to Wikipedia, the other sister projects and third parties. This would make this impossible.
• Wikidata is at the core a knowledge base. Not a place to put a dataset.
• People expect to be able to query all the data in Wikidata in a unifrom way. This would not be possible.
• We are building data quality tools that all resolve around the way data is stored in Wikidata right now.

Lydia, do all the raised issues get resolved if this was not wikidata.org ?

I believe so.

I listed PROs and CONs for each domain. Did I miss anything? https://meta.wikimedia.org/wiki/User:Yurik/Storing_data

Patch https://gerrit.wikimedia.org/r/#/c/281331/ implements support for on-wiki tabular storage.

There is a big discussion on Commons related to this issue. @Lydia_Pintscher and @daniel, you might want to elaborate there why Wikidata is not the right place. The overwhelming majority so far are in favor of putting data on Commons, but few opposing votes do bring valid concerns.

@Yurik,

I agree that the majority seem to be supporting, but I think the opposing voices should be taken into consideration more carefully. I read some of the opposition and your replies, and I agree with you about the idea of releasing early and releasing often, but I think the bare bones release should consider this:

"before allowing this type of uploads we need a full developed environment for this data in Commons regarding policies (scope etc.), categories, maintance tools (like filters etc.), help & orientation pages (for uploaders and maintainers), etc.. Btw: what about references to support the data or can just everybody throw his data to Commons? But the main question is: who in Commons will be able to additionally monitoring this kind of stuff? Not only the uploads itselfs but also all later modifications (typical edit by IP: "sales": 2.000 --> 200.000)? And: they (companies, marketing, spammers, POV's/COI's users etc.) will abuse in medium-term also this system, providing [fake/false] data for their "interests". IMHO, Commons in the past already suffered some mass-oriented "features" like Wikipedia Zero, cross-wiki uploads via local Visual Editor, mobile uploads, or whatever --> all mostly either grabbed from Internet or out of project scope (often detected only months or years later) — btw: currently, around +/- 30-40 % of daily deletion requests at Commons are already related only to "out of project scope", mostly involving "Commbook"-uploads from spammers and user pics from gals & guys who (will) never touch an wiki article, vomiting an user page on "their" wiki, thinking Commons = Facebook. The concept of "data uploads" may be interesting but ignores (among other things) the completely under-staffed [maintainer] user base in Commons and instead of trying to keep a (+/-) quality database of "free-use images, sound, and other media files" the whole thing is already turning (also regarding e.g. thousands of images grabbed & uploaded from social media) more and more into a random web hoster. Gunnex (talk) 20:05, 8 May 2016 (UTC)"

I think this is mostly busy work and I'm happy to do it as one of the tasks on the new board you were going to set up.

@Milimetric the new board is at Commons-Datasets. I agree with the concerns you raise, and I see a significant portion of the community has raised them on wiki. I think we should continue the discussion there, because otherwise we risk splintering the discussion into multiple unrelated and unconnected branches.
Also, lets start putting down some ideas that have been floating around to the help page I just created. Any changes are welcome :)

Quick update prior to today's rfc irc discussion: we basically have two areas to discuss: 1) technical questions (data types, use as 'aggregation layer' for data from wikidata), and 2) the hosting question (which wiki to put it on, or whether to give it its own).

I'm removing the TechCom-RFC tag from this one, since the TechCom issues can be addressed in T137929