dave
We will have to agree to disagree on about everything.
A barrel lug will not reduce thrust on the recoil lug unless there is so much slop in the bedding that the barrel and action can move. That would be possible if you do not bed the channel between the lugs, but that gets back into another bad idea.
Cross bolts installed at the recoil lug were better than no bedding even in unbedded rifles built by members of the Guild these days. But they are only better than nothing.
The little brass pins Remington tosses in some stocks were not designed to stop splitting but rather to harness those itty bitty pieces of wood that will break out between the trigger and magazine cut-outs.
Inducing sheer forces on them by bedding them is likely to do two things. First, because the stock is going to flex outward and attempt to shorten, it is going to put those little pieces in sheer with a piece of stamped sheet metal. That will work those itty bitty pieces of wood like crazy. They are designed to have clearance.
Second, the magazine box as recoil lug is not going to be consistently stiff. Inconsistency is never good for accuracy.
And in rereading your points you say the bedding will prevent the corners from pushing outwards on the stock... actually, it will increase that outward thrust if the box is compressed lengthwise... It has to.
art
