should liandry's have a base DOT or DOT per max health instead of current health ?

Liandry's have a dot for current max health, i wish it had a base DOT, ive had many times where I thought i would kill someone after whatever spell but he dosnt really die and i remember that liadrys is only dot for current max health, i wish this item had a base dmg or max health, if its max health make the % dmg lower i would not mind, i wish the DOT is same all the time so its easier for damage calculation, knowing ur dmg is vital in the game.