Reverse rotation engines is the first thing folks want when they are going to try multi's for the first time and generally its a dead end. While its true it does eliminate a 'critical engine' at high deck angles (the left is critical with normal rotation engines) But the complications is not worth it.

The biggest complication that is a real pain is finding and stocking for this airplane a reversed prop (P) or pusher type in most manufactures labeling, for the opposite side.

Actually what is more helpful and this always sparks contraversy is out thurst on both sides. It is very usefull on many airplanes and I have one that is fully adjustable from zero degrees to eight degrees out both sides. This I use to taylor to the individuals skills when helping someone in the multi engine transition and learning to fly sustained flights on one engine.

John