You know what bugs me?
When a champion loses some stats but then passively gains them back via their abilities. Olaf passively gets 20 armour on his ult? Better lower his base armour just a bit to balance it. Kog'Maw/Twisted Fate gets bonus attack speed on his Q/E? Better lower his attack speed growth just to balance it. Thresh gets infinitely scaling armour? Let's completely gut his base armour and remove his armour growth. Tryndamere/Master Yi gets AD on his Q/E? Let's nerf his base AD just to balance it. Actually, let's buff it again, since Melee carries are in a bad spot during this meta. Tristana gets bonus attack range per level on her passive? Let's nerf her base attack range, then. Just to balance it.
Like, what's the point? I get that it does indeed change things a bit for the better if you choose to max the respective ability first (when possible), but that just makes your other, more viable abilities all the less effective in return.
also 
and
that need to slow themselves in order to cast to spell?
for wanting to move faster for a little bit