This is a really good idea! As Jules said above it would help prevent grief. If this does get implanted Have a small tutorial on how to use commands and set stuff up. +1
What would the kits include? Would there be quest to earn coins? could you buy kits? How much would kits cost if you buy them with coins? Should be more detail but neutral for now.
I've suggested /Adopt and it's not needed. /family isn't needed. a banner is pointless because you can make banners in a crafting table. and what strawberry said about /hdb. none of these would help the server besides having a head menu.