Stop making threads trying to get someone do the work for you.
NTR is still working fine, only a few games are not supported on Old3DS.
It's not a big deal.
When it'll become totally not working, why not but for now there's no urgence.
Also, I don't really get the point of those threads.
Are you really hoping that someone will tell you: "Don't worry I'm on it, expect it tomorrow ! " ?
Maybe someone is already working on that, but it's a lot of work, and saying that you're working on something that big is the best way to be harassed for a release date.
A smart person won't tell you that he's working on it until he have something ready...
So again: stop those useless thread.
If you're so desperate for a replacement you can either do one yourself, or buy a gateway.
No one asks you anything, you're the one spamming for that...