Spell sense isn't supposed to tell you what your allies are casting, at least not the way I've ever used it.
I used it defensively, to move when I sense a hostile spell or to counterspell it. I imagine that's what the true concept behind it is. Much like silent casting isn't so that your friends don't know you're casting, it's there so your enemies DON'T know you're casting.
_________________________
If you say plz because it is shorter than please, then I will say no because it is shorter then yes.
