unfortunately there was a slight quality control issue in the coveralls:

there's a hole where a seam didn't get sewn properly. I can fix this pretty easily though so I'm not too worried.
That's not a hole in the seam. I mean, literally, it is a "hole in the seam", but that is actually a slit pocket. This allows you to access the pocket of whatever pants/shorts you may be wearing underneath the coveralls without completely unzipping the suit. I lost access to my slit pockets because I had to get my coveralls taken in from a 44" waist to a 34" waist, so the seam was resewn without the slit, but I plan to take the other external hip pocket, cut out the liner, and close it with velcro so I can still access, for example, my wallet in my shorts pockets underneath the flightsuit.
It might be convenient for attending an event, and I see a booth with something I REALLY want to buy and just can't wait to get out of my kit to buy it XD.
I think the basic gist with pockets is, if it is a patch of cloth sewn onto the outside of the main body of fabric (think butt pockets on jeans), then you need to remove the pocket. If it is a side pocket where the opening is aligned with a seam, but otherwise you don't see any external pieces of the pocket's construction, it is safe to leave it without obliterating all signs of its existence; just make sure it stays closed, with velcro. OR you can sew it closed.
Also, if a pocket is completely covered by some part of your kit (e.g., a kama that completely covers your butt pockets, or a flak vest that completely covers your chest pockets), let the covering piece of kit do its job and forget about the pockets.