Hi,
Thank you for the detailed suggestion. We will share this with our product team and evaluate whether it can be considered for a future firmware release.
At present, routing Tailscale exit-node traffic through a VPN client is only achievable through manual configuration in LuCI. Please note that this approach is not officially supported, may become unstable after reboot or firmware changes, and typically requires custom scripts to maintain persistence.
You can review the community discussion and example configuration here: