Longbow ranger is better.
Elite skill is a discount Rapid Fire from ranger's longbow.
The "omega damage" require you to stock up 5 blades which mean more ramp up time than normal mesmer.
Sword 3 is good thou.
Update.
Sword 3 doesn't seem to immobilize anymore. Mirage sword ambush give a clone and daze.
What is the point of F4? Normal F4 scale with your clone and you can attack or do stuff while you are distorted.