I Think this is definitely worth exploring and could rapidly help expand the grids true networking capacity.
I think one thing that should be clarified is that even having a single gateway node in your farm can provide significant movement in the goal of advancing the overall project, I feel like the planetary network is truly where alot of the value in the project lies.
Looking past your nodes ability to deploy VMs, its truly doing amazing things just to exist networking wise.
With that being said when your node becomes a gateway its role in that network changes, because with the addition of the gateway address it is able to be added to the the peer list within yggdrasil,
The peer list is where every node sends their outgoing connection requests to establish the encrypted ipv6 tunnels that make up the ygg transport layer(possibly wrong term?), threefold operates within a sub network of ygg because our peer list is made of all internal nodes with additional configuration.
To paint a familiar picture, consider a non gateway your home router, its able to send and receive on the larger network but generally speaking devices behind it cant be reach by incoming unsolicited connections. Once your node has a public gateway address it gains the ability to for additional ygg clients to be able to connect to it as their entry point into the network. to truly understand the potential here you have to look beyond typical internet networking mindsets because its not doing the networking anymore.
Say There is another node here in my city or someone just using the planetary client, my node will benefit them as is because they can use it in the peer list and have a 5 gigabit gateway to the ygg network, possibly within the local isp network, on pure fiber.
the way ygg works is when you connect your node to the network, it establishes tunnels to multiple peers and dynamically configures routes between nodes based on the spanning tree. and because there is single controlling standard in place and the IP belongs to the device not the network, this all able to be done with no user input. Think of it as the power grid, your company often doesnt handle making the power, they just handle the delivery, this technology combined with zos in wide spread use could theoretically allow for every device in the world to have a publicly available IP address through use of planetary clients and your 3 node gateways would be the data uplinks carrying that traffic across the yggdrasil network. i mean not be cliche, but imagine a world where you could dynamically add someone to your local network, from across the world, by typing a single IP into an allow list, and they would have that access regardless of what internet connection they are on, with the same ip address, only having to press one button and it was over a network that could dynamically route traffic over nearly every available home internet connection with widespread use of the planetary client and 3node hosting.