Agreed, it's useful and I very much appreciated your post!
I think Litecoin will need to figure out the next innovation if BTC activates SegWit and Lightning Network successfully.
Now, one interesting thing that could happen is where Bitcoin is faster but still not as a fast as Litecoin, and as you mention converting between Litecoin and Bitcoin becomes transparent and would not need an exchange... that could change the game.
Agreed! :)