I see your UX Research page already has a link to EnWiki 2018 Infobox RfC. However I don't think you fully appreciate what that RFC says and what it means.
A very oversimplified summary would be that about half the community support Wikidata in infoboxes, and about half the community oppose use of Wikidata.
A somewhat more nuanced explanation would be that 1/3 of the community support Wikidata in infoboxes, 1/3 want it GONE, and 1/3 find the current usage of Wikidata problematical but they would be willing to support Wikidata in infoboxes if their concerns can be met. Some people would argue that it is impossible for Wikidata to meet those conditions. It could be argued that the 1/3 in the middle haven't followed the issue closely enough yet, and that they haven't yet figured out that Wikidata can't satisfy those requirements.
There have been a number of other Wikidata-related RFCs since then, denying or removing Wikidata from other locations.
- There is a substantial likelihood that your project will provoke a new Wikidata RFC on EnWiki.
- There is a very real possibility that your project will effectively trigger a ban of Wikidata on EnWiki. I would hesitate to claim any particular percentage chance on that outcome. The issue is precariously undecided among the community, and my impression is that it may be tilting against Wikidata.
I anticipate little chance this post is going to affect the course of your project. However I did want to alert you of the situation and the potential effect.
And as someone else noted, this tool would be literally unusable for unsourced items on EnWiki. There is an overwhelming rejection of unsourced items. The range of debate on EnWiki is whether sourced items are permissible.