Historic Cyrillic characters in Gentium Plus

Is there any work underway to include additional historic Cyrillic characters in Gentium Plus? Specifically, these:

Hello - No we do not have immediate plans to support these historic characters in Gentium and our other Cyrillic fonts (Charis, Andika, Doulos). We are not against adding them, but we have other priorities. If someone wanted to design them and contribute them to the project we’d be happy to add them, however we’d need them for all the styles of Gentium and for our other fonts. If you know of someone who would be willing to work on them let us know and we can work with them.

Thank you. Font creation is beyond my abilities, but I shall ask around if any acquaintances are able and willing to contribute.