Is it fun when you get 3-4 resets? Sure its loads of fun and feels REALLY strong. Is it fun when you get no resets? No, not at all.
Right now Devs are having to tune too many moving targets with FDK. Just get rid of the reset and make it gain 25% crit chance every 10 stacks. That way you can tune the spec based on a more consistent damage profile. Right now we top the meters with 3-4 resets or are at the bottom with no resets. Crits on RM also play a HUGE part in how well we do.