Riot does seem oddly averse to changing any of MF's base stats or scaling. It's almost like they're scared that tweaking anything to bring her more in line with other AD carries would cause her to spiral out of control or something.
It's the same with Caitlyn. As it stands, it looks like Riot wants them to stay as strong early game carries that drop off unless they snowballed. But the fact is that people will always favour a safer pick like Graves who's strong throughout.
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"Eet's game time..."