Now that runeglaive is gone should ezreal's Q be changed back to how it was?

it still applies ont hit effects like lich bane tho

It never applied on-spell effects. That's why it doesn't apply Deathfire Touch, Luden's Echo, Liandry's Torment or Rylai's Crystal Scepter.

Runeglaive used to apply on-spell effects on the Spellblade proc before it was nerfed.

Runeglaive would apply on-hit and would, itself, apply on-spell effects.