I drive my Megane II very sideways when racing or on the a track, with all weight removed from the back and the F1's stiff suspension all it takes is the weight to come forward from the back and lift off the gas.. get back on it when you want to go straight again. Its the same principle in a RWD only only in a decent RWD you can power slide out smoother.
I recommend a track day in the wet with the driving aids off to get a good feel for the car.
If that doesn't suit you could fit softer springs to the back.
If you drive the car fairly hard then you will get alot of movement from the back end. the optimum way to use the handling traits is late braking then use the lift off oversteer to get the car turned early and then on the power early to use the LSD to its full advantage.
I wouldn't suggest doing this to extremes on the public road hough as it is more than possible to spin it if you overcook it.