corner tires are critical for driving your track. With a rear tire (or worse yet the back 2 tires) disabled. You?ll slip inside and fail to drive track in higher load scenarios. Yes track tension will help, but tracks that are overly tight suffer more damage to the tracks themselves, hinges, corner bearing lifespan, tweaked frames, and broken axle flanges. Being as the inside of the track is smooth, you?d have to have that thing bow-string tight and then some to get it to drive reliably. I?d be worried big time about the front axle and chain. It would stretch quickly , begin drooping into the face of front sprocket and binding under heavy load maneuvers. Lifespan on the front chain would be pretty bad I think.
Unfortunately your rubber track has a high slip load under the middle tires. Just gotta index tires properly. Other tracks have a significantly lower slip load under the middle tires.