His E's vector based targetting made him very appealing, however, his ability to specialize was something I was looking forward to, and was actually expecting it to allow him to play radically different based on which augment was purchased. I assumed this would be because his passive would have an effect for each and every ability, including his ultimate. While I was let down that the Hex Core only changed a single ability, and none did anything for his ultimate, I still found his powerful ultimate and his E key to be very fun.
In truth, his damage is *fun* to execute, it's not like other champions where the skills constantly poke down, when Viktor's abilities hit, you see them CHUNK enemy HP. The Hex Core, as it currently stands, doesn't have a strong enough influence on his playstyle, he's still 95% the same champion regardless of the decision you make. If his entire kit were to change with the Hex Core, albeit weaker than it currently does with a single skill, I'd think that the choice would actually matter instead of, "hey, to do anything late-game, I need to pick up Augment: Death". A T3 upgrade would help drastically, and simply by giving him the option of purchasing it, his technology would actually FEEL like it's evolving, because it doesn't really right now.
Aesthetically speaking, Viktor is a really interesting design amongst half a dozen supermodels, when I look at the roster and scroll down, I see *Human, Human, Human, Robot, Robotic-man*. Now I don't usually go for the sci-fi-steampunk designs (Ok, fine, I play tabletop Warhammer 40k, so this statement isn't entirely true), but I'll be damned if I pass up such a standout like Viktor. Viktor's splash is menacing, yet calm. In-game, his kit flows well with his model, being able to use his E while moving (along with his laugh), adds something that can only be explained, childishly, as: "BOOOOOM YOU DIDN'T SEE THAT COMING, DID YOU!?".
*I'll probably be editting this more as time goes on*