To be honest, a total waste of time for designers.
Designing in itself, is to forget cost and schedule.
If you're not ready to go all the way for a design you believe in, then it's not a perfect design to start with.
Good design does not equal selling design.
This is a cruel fact that all designers must face.
But as V would say, "Ideas are bullet-proof".
So hang in there, ye fellow designers.