Weighing in on the recent topics
Decals- I am surprised manufacturers don't give us tons of them. They are so cheap to make and they do add to the sense of value. Schumacher usually does a decent job on this front, but that is probably because they don't really push box art. "The car on the box is somebody's take on it, here's a bunch of stickers, go do your own thing". It seems to me that we now get fewer decals with aftermarket stuff. Motors, ESCs, chargers, suspension bits, all used to come with them. My pit boxes were covered in them.

Novak comes to mind as providing a load of decals.
Motor- Nothing is free. You pay for it somewhere. So if the motor isn't one I'd buy, I don't want it included. If it is one I'd buy, then the manufacturer can include it cheaper than retail, so it is a good deal. But I only have "runners". These kits that are intended to be "shelfers", ought have a motor so all of the collectors can get the full shelf experience and get to memorize details like "the green stripe was thinner on the first 73 kit motors", or "the kits sold through a distributor had Mabuchi brush springs".

It's all part of the fun.
Bearings- Same as motors. Runner- hell yes I want bearings. Shelfer- whatever makes the collectors happy. I lean towards bushings (bronze colored plastic) to lower the cost for a car that is never going to move anyway. I don't even know why they have transmission internals or shock seals

A lot of high end 1:1 show cars have empty engine blocks because no one is ever going to drive them.