Yeah, it sounds scary at first. Since we've always been told that sysNAND should never be touched (unless needed to), but that only applies to menuhax. No need to be scared of sysNAND anymore. Bricked your sysNAND on A9LH?
Luckily you don't require a hardmod anymore, simply boot up Decrypt9.
I hear you buddy and you are right.... i have a hard mod anyway so i can always reflash a 9.0 sysnand
TBH... there is only one final concern i have, what happens if there is an A9LH 3dsx update and i cant launch it from whatever the latest FW is ??