Exactly that's why it's advisable to download the official wallet, it makes the network so much better if everyone who's using nano or who has nano will keep a node running, it really helps in making the transactions of nano super fast. Yeah you're right even though nano isn't a staking coin it can really help the community if everyone takes time and download the official wallet. Is nanovault.io from the official team? It's the first time that I heard about it, I doubt it's created by the official dev team, I could be wrong though. I hope somebody can confirm. Yeah the official wallet is definitely the safest when it comes to storing your nano but sadly it's not everyone's cup of tea and I think the official wallets that's been provided by the team is also safe and can really secure your nano as well.