I gave some thought to it. Because at a certain point it is indispensable to use IPv6 for some web services and web pages. So I believe it is better to use it now instead of reconfigure it later again.
Warum das?
Soweit ich es verstanden habe, ist es notwendig, dass die Geräte verschiedene IPv6-Adressen haben, eben weil dadurch kein NAT nötig ist. Siehe: IPv4 / IPv6 - Verwirrung, wann was notwendig - #3 by ampfinger
It is all running under the same domain.