I think the deicer is CANBUS-controlled, even though it triggers a timed relay.
I'm interested to see if the Rhino supports rear DVD. I'm fine with the Toyota remote, and I don't even need (or care) to watch DVDs on the front screen, but I hate to end up with an inoperable rear entertainment system since my kids use it. Bonus points if you can just insert a USB stick full of movies instead of using spinning DVDs or if it supports Plex. Optical media is for suckers
Seems like I need the remote to get the rear screen to turn on, even if down anyway.
I'm sure the rear dvd will work, but not out of the box. The Rhino guy told me the rear dvd will still be functional, it will just require additional steps/harness/splicing/etc. (which they don't provide) to get the video out to work with the rear screen. I'm sure it can be done if someone has the time to look at the wiring diagrams or see if an aftermarket support harness exists from another Toyota vehicle with rear DVD.
I'd like the car functions (rear dvd, deicer, hard buttons) to work before I upgrade. That said, if my oem stereo broke, I may be easier convinced to give up a feature like the deicer (and there are aftermarket DVD units). Spending $9k on a replacement nav which already sucks is not in the cards for me.