The heater delete is a bad idea. Been there done that! Never again. Even with the limited miles, you ALWAYS end up in a circumstance that requires defrost.
For the past few years I'd tried talking my son out of deleting the heating system but I began to see the advantage of having a really clean firewall behind the Hemi. After mentioning your comment to him he said he'd consider an aftermarket system from someone like Vintage Air.