I absolutely despise shirt pockets, and despair over the great selection of ready to wear shirts with pockets and the seemingly limited choices for pocketless -- time to try some MTM shirts.
I don't think it would be a problem to remove the pocket from a brand new shirt. Once washed the needle holes should close up and once pressed any outline should disappear. I'll have to try this and report back, although I do often use the pocket to toss my watch in while I wash my hands. Personally I prefer spread, medium weight unfused collars and smallish unfused French cuffs or medium weight barrel cuffs. I just noticed yesterday that the angle-cut edge type barrel cuffs annoy me a bit but I think the buttons could be moved in a bit to fix that. Two buttons is optimal on cuffs. Also the bloody arm crease is supposed to line up with one of the pleats on the cuff, dammit. Someone tell these shirtmakers that. I also despise many small pleats or the blousy type sleeves. Fitted is better everywhere.