Thanks for the TD4 pre-order!
We use machine cut 3M vinyl for some custom shaped protection that we put on some frames by request. There are also some basic frame protection kits that are on the market that can be found via google. TD4 is so new that custom kits from 3rd parties aren’t available yet but they probably will be later in the year. If you’d like us to add protection to some key areas of your frame, just email email@example.com and he can help you out.