Right now when in Tow Mode, TACC is available but no other EAP features can be used. While I recognize that towing a trailer significantly complicates the challenge of making EAP work safely (since the trailer effects the vehicle's handling in a variety of ways) I hope that in the near future Tesla will at least enable Autosteer while in Tow Mode. Just having that single EAP feature would be super nice to have on long highway trips while towing. I just tweeted my request to Elon. If anyone else wants to make the same suggestion to him, maybe we can get his attention.