Yeah it’s definitely been handy for me so I can see what game I should play next outside of the current meta of games

You would be forwarding ingress traffic(traffic not originating from your internal network) to 443/80, this doesn’t affect egress requests(requests from users inside your network requesting external sites) so it wouldn’t break your internal DNS resolution of sites. All traffic heading to your router from outside origins would be pushed to your reverse proxy where you can then route however you please to whatever machine/port your apps live on.