Like Larry says, whether some of those points are positives or not depends on the customer. But the oversize axle point is interesting. Did they engineer a proper/better mounting to the frame? Is the frame stronger? Better spring design? If it is just same old, same old, then the main weak point of trailers is still there...with heavy duty axles on 1920's leaf spring and mount design that will wear out in 1000 miles and possibly crack the frame, break a leaf, shear a spring bolt...you know...we've read about it hundreds of times.
But if it's different, I'd really be interested.