I did a little more thinking, this problem is complicated.

should SE allow us to dot the opponent in any direction?
let's say they give us wider angle to cast spells on the opponent which means we don't need to face directly to opponent to cast spells as long as the opponent is in front of the caster.
but for dots, the spells that don't have casting time, should they allow us to run in a random direction while casting on enemy, if we don't turn on auto-facing.