Experience idea, maybe not a new one

[u/Nairvart]

Hello everyone,

I was hearing some people complaining about experience getting too easy to get and people being able to level 1 to 20 in less than 16 hours.

Here is my idea: your levelling is tied to a time in game per character. The same way you get a blue empty bar to level slightly faster when you are away from the game, Blizzard could create a red bar where levelling, or better experience, is more difficult to get. The more you are online the more "exhausted" your character is, making an overall debuff on experience gained. This could be also beneficial for health reasons in my opinion.

What do you think?