What did those meals consist of, were they gourmet ones?
Classic. My ideal blazer has only four buttons, like this one. If there are two more, they should be in a straight line with each column (similar to Navy uniforms), not placed farther out. These are not easy to find.
I should remove the top pair of buttons from one or two of my blazers and see how that works -- I don't think the balance of the jacket would be altered in any way by this removal.
My ideal blazer has three, only the middle one being useable!
I agree with your take on the DB with four. Since DBs must be worn buttoned or look slovenly, I always find that the top two being more widely spaced on a six button jacket gives the impression, even if inaccurate, of being too tight in the chest.
BTW I like the yellow sweater or vest peeking out a very nice touch, and it would not work nearly as well on a six button DB IMO.