Why did Akali get a re-work and visual update?

When there are characters like Nunu, Mordekaiser, Malphite, Udyr, Shaco etc. who are all way more antiquated both in terms of their kits and how they look visually?
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We're testing a new feature that gives the option to view discussion comments in chronological order. Some testers have pointed out situations in which they feel a linear view could be helpful, so we'd like see how you guys make use of it.

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