Remember folks that MTH getting the Lionel branding was settlement of a lawsuit. Probably cost Mike nothing, but had a 10 year life. Now that it is over, and the market is smaller, no reason to pay for it. I suspect there will be some more SG but unlikely any truly new items. Jim Burke's 200 series cars were cheap to implement (covered gon, bay window caboose, etc) adding pieces to existing products.
So a couple of thoughts, Mike, put a PRR K4 shell on the 392e (I'll show you a 3D printed one soon)
make a 6 wheel drive with smaller drivers and put under the 400e - it will fit, and change the cab to look more like the NYC Hudson. Then put the 392 tender behind it
same 6 wheel drive could go unreal the 384e to make a nice 0-6-0
whatcha think
Jim Waterman