Since it is not necessary to face a target while healing them..

[Jyoeru]

Can we have a seperate face-target checkbox for buffs/healing/projected spells (Sacred Soil, Shadowflare, other aoe's).

I agree with this request. One place that this specific issue bothers me is Demon Wall. Attack wall and you're facing correctly. Toss a heal to a player not directly in front of you and you're likely to get tossed over the edge due to facing derp (though I fail to understand how a direct frontal push would push you back based on how you're facing).