Basically, you put your amount in, click produce and hope your maths is correct or you're not so tired you miscalculated. When you click produce it then tells you the QL output. Surely my line managers can tell me before production starts, catching mistakes

Surely this wouldn't be too hard to impliment, by simply adding a confirm button on the screen after you click Produce. That way you see the level and decide yay or nay.
Another reason this would be helpful (and i don't know if this is a glitch) but when i set my textile factory to QL0 my jeans come out at QL1 and i have to cancel the job and restart it with the same damaged (now QL0) materials. Actually whilst typing this i have had the thought that the QL level of the building only relates to the QL level of the Good being manufactured (which is at 0) but the materials retain their QL level. Would that be correct? And if so that's a bit odd. If I set my building to QL0 it's because i want my manufactured good to be QL0.
Anyway, that's for another post, but to know the QL level before production begins would be extremely helpful.
Ta