Im pretty sure necro doesnt count towards the original owner of the thread. I've bumped threads of mine that were pretty old and i've seen other users and mods do the same. But talking about the suggestion, i don't know what /nv does so i dont know what to say. ;p
+1 I frequently use this feature (mainly for the fun bubbly particle effect xD) and would love to see this happen!
I have a home set at my heal sign for when I'm mining and need to eat. Thus, I do a lot of world switching, and I agree, this should be added.
I wouldn't mind this implemented either, although I instinctively type /nv upon tp to the mining world.