Quick backstory: Recently helped a friend complete the final MSQ (not spoiling the story but those of you who did it, you know how hellish it can be) and it reminded me of something this game desperately needs, even more so with the addition of the paid boosts.
I saw people failing basic mechanics: Stacking what should be spread, not moving to safe zones or zones of least damage taken, not prioritizing the correct targets, I can go on and on. I would love to see SE take inspirition from what World of Warcraft has done: Make a proving grounds with bronze/silver/gold medals or similar.
You can read on WoW's proving grounds here: http://wow.gamepedia.com/Proving_Grounds
TL;DR: Every role has its own tiered proving grounds, progressively getting more difficult, progressively introducing more mechanics and progressively requiring more efficient dps rotation and cooldown/ability usage. Along the way mechanics and potential methods of dealing with everything is explained.
If this were to be introduced and you add an additional restriction to level cap content (dungeons requiring bronze, trials requiring silver, omega requiring gold for example) it would, in my opinion, VASTLY improve the experience for players that are actually trying to play the game as well as they can as they will not be stuck with players that are ignorant of what to do, single-handedly wiping parties.
Another thing you could do with the introduction of this system is up the difficulty of all content that requires proving grounds. Since you can't pass proving grounds if you're not good enough, you can expect a certain amount of competence from players that have completed it, allowing for more complex dungeons/bosses and an added challenge, maybe even an extra tier of content (extreme dungeons maybe?).
TL;DR for post if you're not interested in wanting a better game:
- Make proving grounds to improve player skill
- Add proving ground completion as a requirement to queue level cap content
- Make level cap content more difficult as player skill grows up for healthy added challenge
Sidenote: Make boss auto attacks hit harder so cure1 and 2 are actually useful ;3