What's the effect of this piping?

Jeff_74

Dan's Lost Art book and came across the section about the details of one pipe steam systems. He says that the best way to pipe take offs from the steam main is using 45 degree fittings. I've noticed that in our one pipe system all the take offs are at 90 degree. What are the effects of having the return condensate drop directly on the steam as is moves through the system? (I've included some
pics.)