There is a subdomain co.de that would sound a bit cooler BitcoinCash.co.de I think you should not expect much.. Maybe $XX? BitcoinCash.IO sold for $1000.. Anyway, I think Usage is a problem with BitcoinCash Domains
I don't think this extension will find an end user quickly. If someone wants a domain like that, they'll prefer .de or .co.de before they go for .com.de.