I have played Viktor in about 100 games in total, which is a lot considering I have played maybe 500 games in my lifetime.
I can say that post update Viktor does feel a little different from new Viktor, but I feel it was a step in the right direction. I was originally opposed to the update, but I have learned to love the new Viktor too.
I was originally opposed to the Q damage change, since it seemed that it would be pointless to level up first, since it's main damage scaled with viktor's level and not the spell's level, some thing that is pretty unique to Viktor, as most champions scaling abilites are passives. This allows Viktor to focus on leveling E while his Q damage still retaines offensive power. Leveling Q first will now be more of a defensive option, as it will increase your shield amount.
The E change I was also opposed to first, but I like the new one too. I used to be able to clear enemy minion waves as they were walking into lane and the old DoT would kill the minions, but now I can't do that since they will walk out of the new E's explosion zone. Now I have to wait until the minions stop walking so I can keep them in the double blast and kill them. While this was an annoyance to me, it was an okay shift of power for me since now the E did more damage, and there is less of a chance for minions to steal CS on very low hp minions that are about to be killed by the DoT. The second explosion is also good at catching enemy champs in the jungle. Now I won't have to burn Ignite, wondering if I didn't need to, if the DoT was enough. Now the Damage on the E is more instant, a trade off for the Q now being the sustained damage.
I like to rush a E augment first so I can get my wave clear asap. Sometimes if I get it too early, I don't have enough AP to clear the wave even with the Augment, but one more AP item should bump the damage enough for it to one shot.