We need to pick one

Do we want assassins being able to one shot people, or do we want four other classes to be viable?

Here is the deal, if assassins need to be able to "one shot" someone then we create the game that we currently have, where everyone needs to be able to one shot everyone. Why? Well because if I can't kill an assassin with a non-assassin I'm not going to play anything but assassins, because they win 100% of the time through one shotting.

Well, the other 4 classes, Tanks, Supports, Adcs, and Mages Don't need to rely on one shotting to get the job done. They have a nice combination of heals/sheilds/cd's and survive ability that lets them do their job. Honestly lets just move away from assassins. We are killing four classes for the benefit of one.

Now lets be explicitly clear here, I also don't want to see a tank meta, where tanks automatically win, but thats the thing about tanks, they often get too much damage, because they also need to compete with assassins, so they often either get overloaded defense, or overloaded offence to make them compete. We need to work in that happy middle ground with all classes where they are able to do their job, but not do it so well that they auto win. If assassins can 100-0 someone we are asking for them to "auto-win" fights by existing. Because its their job to "auto win".

To be honest we actually currently have a very balanced game of (almost) everyone one shots everyone, but I can tell by the sheer number of complaints on the boards that we are at likely peak discontentment with the game. If something doesn't change, players are likely to start dropping like flies. We need a proper rotation back, and for that we need to accept that assassins shouldn't be 100-0ing players any more than any other champion should be 100-0ing players.