I don't think anybody is arguing about reversing the wheels for the extra distance the rim provides. This would be within the design spec of the machine. Having them track with the rears makes sense up to a certain point. The extra stress is from the leverage that adding a spacer to them will cause.
Been around and around on this subject in multiple threads. I blatantly disagree; you are the one who is making an untrue assumption.
The front axle swivels and has a stop, yes. For simplicity, let's say that swivel is + or - 10 degrees (or 10 degrees up / down as measured on either side). That 10 degrees is not absolute to the ground, it is in respect to the tractor. Let's try your experiment. Park your tractor on a perfectly smooth 20 degree slope. At this point, your uphill rear wheel may be starting to feel a bit light. But your front axle is on the same 20 degree slope. You lift the front axle with your bucket and you will find that it still swivels by + or - 10 degrees. If this were not true, it would already have hit the stop at the 10 degree slope (which comically would lift the downhill side rear wheel 10 degrees off the ground). Just standing still on the 20 degree slope, the front axle is still at a perfect right angle to the tractor body and still has 10 degrees to go before the front end stop kicks in. You won't have any benefit to the stop until the body of the tractor is at 30 degrees (which means the rear wheel left the ground 10 degrees ago) and if it felt tippy before, you are probably already needing new drawers. No matter what the degree of the slope is, the stop will still require another 10 degrees before you hit it and the only way you hit that stop is if the angle of the body of the tractor is more than the angle that the front axle is sitting at. By definition, the back wheel is off the ground.
The only time the front axle is going to help on a roll over situation at all is if you have modified the whole axle to be like 3 times wider than the rear wheels. Then the rear wheel will stop at 30 degrees because you have an outrigger several feet down the hill from the tractor's position.