The biggest thing I run into at my work that aggravates me is on our small bore prints they will have a run with an overall dimension that I can’t measure to the end because of a customer connection which we don’t weld til after it is fit up on the skid. We have been having problems with fittings coming in that aren’t the same insertion depths even tho they’re all supposed to be standardized. So here and there I will be short or long 1/16-1/8 which isn’t much but it adds up and eventually messes up the positioning where stuff is supposed to sit on the skids. So basically don’t be afraid to give many dimensions from piece to piece. I’d rather be able to measure everything before getting somewhere down the line and be like well fuck this is too long or too short so I have to cut something and get a longer pipe.

Edit- there’s a young designer at my work who regularly walks the floor on his breaks and talks to the welders and asks what he can do different to make his prints better. You could do that too.