I still don’t get the concerns over alignment. Let’s ignore the economic argument against worrying too much, and assuming that there is an actual need to get extremely fine alignment (which there usually isn’t). It seems to me that any laser-based preview will take as long or longer than a jig setup, and is still more error prone than a jig.
What am I missing? Extreme cases where jigging is not possible? Maybe. I’ve not come across such a case yet but it could happen.
So if we agree that the laser won’t be faster or more accurate than a jig, what’s the appeal? Maybe some marginal improvement in convenience?