With all the talk about "Low and high APM" players and how the gap between them has to be closed it has become clear that there is a huge amount of players who don't fail because they're bad to begin with but rather that they have no idea about the game at all.
The amount of knowledge you can get fast and easy on the internet compared to what the game teaches you by playing it and telling you the importance and effects of certain amplifiers, consumables and actions is probably much bigger than the skill gap in the playerbase.
When you meet people with 600 CP who ask "what is buff food and why should i even use it?"
"I don't use glyphs they don't help anyway"
"What do you mean using potions helps sustain?"
"Why would i want more magicka/stamina it doesn't help with damage right?"
"I can't tank it when the enemy has those red lines flying towards him, is my build bad?"
Those things have to be taught and people have to understand from playing that buff food is exceptionally important, that potions are a huge benefit and that interrupt/dodging heavy attacks/avoiding AoEs is absolutely needed.
Those things have to be advertised aggressively over and over again without being obnoxious till people just do it without thinking about it.
For buff food this could be done with a message that shows up when you log in or your food/drink runs out along the lines of: "your character is hungry/thirsty and it's holding his power back"
This can also help console players by tracking their food buff without an Addon.
For the combat related things like dodging, blocking, interrupting, weaving. Those can best be taught via learning by doing, make those mechanics a lot more needed in OW and quests and also show people that they'll die if they don't use them.
A tutorial that gets harder and harder which starts with an easy task like "block now", "dodge now" but increases in difficulty and weaves in more and more mechanics and shows how an NPC is doing them and then asks the player to repeat them.
After finishing the whole tutorial which should be aimed to be around 20-30 minutes there should be a reward that encourages people to do it and also give 2 more rewards for doing it again twice.
This would help the playerbase a lot more than changing things to increase the damage of worse players because they still have to be taught all the other stuff to be able to compete in PvE and PvP later on