@Riot: Could you slightly buff flat mana regen runes so they're actually worth it?
Each flat mana regeneration seal only gives 0.41/5 seconds, about 3.69 per 5 seconds if you take all 9.
Each flat mana regeneration glyph only gives 0.33/5 seconds, about 2.97 per 5 seconds if you take all 9.
Compare that with 9 armor or the AP seals/glyphs. Pretty bad tradeoff, if you ask me, to ditch that armor for a meager amount of mana regeneration.
Since armor seals are so popular, could you make those mana regen seals (and maybe glyphs) stronger so they're actually considered?