Please consider expanding this enhancement to include the following.
Automatically add aliases that correspond to the local interface networks. The source/destination drop downs under firewall rules include shortcuts for "LAN network", "WAN network", etc. If the system automatically added those as aliases "WANNetwork" = "WAN Network", it would be possible to construct an alias that includes a certain subset of local networks, and would automatically stay synchronized with interface subnet changes.
Say you had 10 local LAN interfaces/vlans, LAN01-LAN10. And you wanted to block traffic from LAN01 and LAN02 from reaching LAN03-LAN10. It would be nice to be able to construct an alias that included the networks "LAN03Network", "LAN04Network"... so only two firewall rules would be needed to block traffic from LAN01 and LAN02. This is possible now by manually entering the network info to an alias, but that needs to be updated separately when interface network settings are changes, adding an extra point of failure.
My particular use case is that I have 30 pfSense firewalls that all have slightly different local network settings, and when I set them up I go through and change the local network info on my master config image. A feature like this would save me some time since I wouldn't need to touch the aliases or firewall rules when changing local lan info.
Thanks
Josh