BioMax
+1y
Every suspension design has it's limitations. Though I do feel that the Satchell link has less than others.
Anti-squat is not necessarily always created by the Satchell link, nor is roll-understeer. The angle of the bars (from a side view) at drive height is a major determining factor or roll-steer and anti-squat. More anti-squat will typically generate more roll-oversteer and vise-versa. As I stated before, by angling the upper bars in or out will also over and understeer.
The one major disadavantage would probably that the lower bars need to as wide as possible on the rearend and as narrow as possible at the chassis, not the other way around. That isn't always easy to accomplish, with the support that the cross member will need to live through the streeses seen by a hard cornering vehicle.