Summary
Tailscale is not only running Wireguard on background, which is faster, lighter and well maintained than OpenVPN's, it also improves connectivity options for no cost at all until enterprise levels of infrastructure. I highly recommend it. The company also received its Series A investment recently, so they're scaling up faster and being able to experiment with new, very interesting features is a part of the experience that has a negative note to me, but not this time.
Unique Features
All these changes would result in a diagram like this one
And that's even more important to my workflow, as the way I manage IAM and connect to each pod is through a central pod deployed to Kubernetes using this broadcast mode, whereas I only transmit to the subnet pods use. This allows me to call Kubernetes pods by their hostname outside the cluster without having to use any other tool, such as Telepresence, for example. As they have clients for all OSes's, I avoid exposing my cluster to the internet and enjoy Tailscale's capabilities of enhancing my infrastructure security and accessibility.
(Disclaimer: I don't work for Tailscale nor know someone who does.)