I, like many of you, often find myself internally raging as I watch players commit any number of major offenses:
* Not using AoE on 3+ enemies (2 depending on class)
* Never ever ever doing damage (Healers...)
* Mindlessly failing the same mechanic over and over again
Now, the last one is the one I really wanna focus on. Even a DPS doing nothing but single target is doing damage, but dead players do zero. There is very little for a bad player to do but continuously throw themselves into content and fail. Now you would think organic learning would occur and natural progress would be made, but for some people this either never comes or simply comes unbelievably slowly. SSS is a nice idea as a test for if you can do a fight, but it doesn't ACTUALLY tell you if you are good enough to do the mechanics.
I suggest a special "Mechanic Test Zone" that players can use to bridge the gap between the lowest content and mid-core content. It would handle things like:
* Overlapping but delayed AoE's
* Time mechanics (Think E2)
* Preys
* Tank swaps
* Tankbusters
* Boss positioning
* Downtime for healers (And then different forms of burst damage)
* Patterns (to help players work on memory since that seems to be a big issue)
Simple things like these would go a LONG way to improving the general skill of this community.