After years of sporadically following the rumors and occasional queries, I can now confirm that Germany does indeed support dual citizenship. This could enable us to seek British citizenship while maintaining our German citizenship, thus accessing our few assets in Germany and remaining fully enabled to return to Germany if we ever wished to, while being able to vote and participate in the political life where we spend our money.
Whether we go for it is an other question. Must think about it. Doesn’t seem like we’d risk losing much more than a few fees.
The official word from the Embassy (which, it must be said, was very helpful and forthcoming with my recent email inquiry), is that dual citizenship is in fact not possible according to Â§25 StaG, but one may apply for leave to continue maintaining the German citizenship in case another citizenship.
To me, this translates into de-facto dual citizenship, subject to certain conditions, and subject to grant of permission with the wonderful name Beibehaltungsgenehmigung.