RE Mudder: That was one ninja who, if I can guess who you're talking about correctly, had the perfect race, subcabal, and ninja lore to be an uber tank, especially against a vampire. They were played by a very skilled player, and outmeleed a LOT of people that a ninja in another situation would not fare as well against.
That is not, however, the point of a ninja. The ninja should not be straight up outmeleeing, for example, a fully trained, decked warrior. They should have to be using other skills, such as strangle/blind/poison, shurikens, appropriate fired weapons, if they want to win a melee fight.
RE Tassin: I don't see what I said as strengthening your argument. If someone is sitting in the same place for even 4-5 ticks (I don't believe that a 3 tick study is possible), and not realizing that there is a ninja with them, then there's a problem. That person is either fighting someone else, or being dumb. Which means in the first case, it's a question of whether or not the person behind the ninja has any class, and in the second it's a question of the player's competence at staying alive.
If you have easy targets, and get a lot of easy assassinates, then of course it's going to appear wonderfully easy and even overpowered. But with my ninjas, there were some assassinations that I worked my *** off for, that required REAL LIFE days to accomplish - some examples include Brendyn (Warmongrel) and Norgrot (Mindflayer?).
To summarize, yes, a good assassinate ninja is not HARD to play. It requires some general tactics, some preparation, and an appropriate target. However, to play a GREAT assassinate ninja involves significant preparation, strong tactical ability, and interminable patience.
My ninja Pheredin was an example of the first. Yes, I managed to take down a couple of the stronger-PKers (much like Inmek). Yes, I made it look relatively easy, as any vet with a falcon eye ninja can do. But I also got caught red-handed a lot, and was never the person that made people avoid cities, regardless of whether or not they thought I was logged on. It takes a strong ninja, who is never seen except when delivering a killing blow, to instill that kind of fear. It takes a special kind of player with all the skills necessary to play an assassinate ninja to that degree, and there have only been two or three in FL's history. Overall, I'd say that's not a bad track record, and proof that assassinate is not overpowered, even when coupled with Falcon Eye.
Hell, I support keeping Falcon Eye the way it is, solely so people will die more and grow out of the "bitch-when-you-die" phase faster.