Exactly, I mean you can literally buy several LCs for the price of one legacy anyway. plus however many Bluetooth LC engines already are out there.
One thing I have in mind for my LC gateway is setting up an ATC or even ATO function. I in my simple two level track only layout that I setup so far, I have an issue where my LC based M7 can derail depending on the position of a track switch when coming down hill as it gains a bit too much speed for the switch to handle it seems. Well I will try and add sensors to the track that will add a temporary speed limit to the train on its way down the incline (and only when it heads down hill since I need the speed to make it up said incline) and release the limit after the switch. an option that may also allow me to run tighter turns at "full tilt". I imagine such speed zones would also be nice for those with layouts including hard to reach switches (that they may want to always run slowly over). I have had Fast Track remote switches for example that only like being run below half throttle due to a manufacturing defect in the switch.(In my case that switch has since been replaced at no charge thankfully)