This would only help me to a limited extent, I no longer use hypervisors without LACP, which means that in addition to setting a VLAN ID, it would also be necessary to create a LACP. Ultimately, this would only be of use to me for the initial setup. There would also be further work to be done, as I may have to adapt MTU etc.
The way I currently handle it is to pack a network configuration into an ISO file and then mount this image on the server. So I can copy the config and adjust the relevant parts.
Personally, I'm currently rather unsure whether the feature will actually be useful for the general users or not. This would save me perhaps 2 minutes of work, which would only occur once in 5 years. Nevertheless, the implementation would be a one-time effort and would probably require little maintenance.
JM2C