If software development projects of this sort fit in the scope, that's would be great of course! I had the impression that it was more oriented towards advocacy and community building.
Also, I think the Wikimedia Foundation and its chapters will likely want to focus on reconciliation for the Wikimedia projects (so, for Wikidata and Wikimedia Commons). For the previous funding application we made, we kept those out of scope because we know it's difficult to deploy MediaWiki extensions on those wikis. My hope would be that the third-party Wikibases show the lead here by developing this extension, which could then be proposed for deployment on Wikimedia wikis once it has seen significant adoption in other Wikibases (on a longer term).