Shawn, You said a lot and some of my comments were taken out of context. This is marketing and profit margin. TMCC is not going obsolete, ERR has modified all the boards and even the latest Legacy sound boards have been reworked for RS. Can Lionel drop TMCC certainly. Can they determine LC wasn't as profitable and drop the line, certainly. Any manufacturer can.
I am just comparing capability. As a tech I understand the hardware. Pull the electronics out of the LC+ and an equivalent TMCC engine and you have the exact same residual frame. Same motor, same running gears, shell, detail etc... Sure there might be a minor cost saving measure like removing the wire hand rail and having it molded into the shell.
To me, this is like some folks buying a car that has 3 levels of features. You only can afford or want level one, except you want the stereo that comes with Level 3. You just don't want to pay for the extra stuff that comes with Level 3. Car manufactures won't sell that stereo separately. It induces cost in tracking manufacturing, and it is a selling point to force you to buy level 3.
MTH has only released 2 versions of trains. Full command control via PS-2 that runs conventional or Command. And Conventional trains (LocoSound or some cheap BRU controlled engines). The price difference has been about $40 to $60 between a Command Set or the LocoSound set.
DCS is the top of the Line command set. They have released less capable command systems for HO, and Sets to give more control and entice you to by DCS.
You don't see folks saying they are selling there DCS system to buy the Remote CDR. It is almost always the other way.
Lionel strategy is different in my opinion. Hi end Legacy, mid range CAB-1L, and LC+, Conventional. Problem is folks are selling Legacy to get CAB-1L. I think the plan would have been to get hobbyist to buy LC+, fall in love and than upgrade to Legacy or CAB-1L. And start buying TMCC/Legacy engines. The problem, is you get just enough nice capability with LC+ at a lower cost. This has some folks thinking about ignoring command in my opinion.
My only real point was for a person with a Command system already, they can do some shopping and probably get a more capable engine at or just above the LC+ price point. G