Just a thought...

Why not giving an AP scaling to Ardent Censer's on-hit effect, so that we won't see anymore abominations like + ?

Feel free to disagree... but to me it seems a very simple solution to an evident problem. Throwing in numbers, we may think about:

15 (or x) less bonus AS/Damage; 15% (or x%) AP bonus, which makes out for the loss at 100 AP; at the current state of PBE changes, this would mean:

• (+10 +15% AP)% bonus attack speed;
• (+10 +15% AP) bonus damage.