Mike, it would be helpful if Lionel documented any of their stuff, the only real wiring diagrams of Legacy stuff has been supplied by Bruk and posted in the documentation thread. Do you think Lionel would actually facilitate keeping these running by providing such information? Not a chance!
There's no reason to believe they'll be more forthcoming with the LC and LC+ stuff.
The LC+ 2.0 looks to be TMCC & BT compatible, the Universal Remote will be using BT to talk to the LC+ 2.0 models. So, they've come full circle, now we'll have TMCC & Legacy with a BT add-on as the "standard" for the future Lionel product line. The dedicated remotes from the LC+ line are a thing of the past.
It'll be interesting to see where the low-end LC stuff ends up going as far as the dedicated remotes. I can see some real pushback by consumers if the remote disappears. Imagine they'll have to give their 3 year old their $1,000 iPhone to run trains, that probably won't go over that well. 
They might be planning on using the Universal Remote as the "standard" remote for the LC line...
