Its not the percentage or the amount of time it takes. How many times must I repeat this. Its the fact that with each continuing expac the max level number is increased to the point where it begins to work against bringing in new players who will see that there is 120 levels to get through first which is certainly off-putting to some. The point then being is it worth it continuing with the current method of increasing things or squishing the level number/some other system instead of adding levels. It’s simply a visual number issue.