Boy...reading comprehension really needs to be addressed on the interwebs. And I quote...from the OP:
"The GGG player buttons are nice. The zzippy switches are pretty good.
The only problem is the printing is exactly 90 degrees from "normal" Happ one and two player buttons. So, when I mounted them in my CP,
replacing Happ, I had to rewire 4 wires. Also, since the switches are pointed 90 degrees, they had to be bent to clear the neighboring buttons.
This probably won't be a problem for those of you who are just building a CP, but if you're looking for player buttons, just be aware..."
But...not to be outdone-->
So because you chose to orient your buttons to have the switches aligned vertically it becomes the "standard"? 
Buttons are round, turn them whatever way works...
My black player imprinted buttons are from Paradise and are aligned the same direction as the ones you got from GGG. Kinda makes one rethink the "standard" thing...
But, the obvious (and ignorantly so) thing you fail to realize is that when the button is printed, it is locked in it's direction, so the button is no longer "round" in a sense, but requires a certain orientation. So, you would have to leave the player button much more room to accommodate the orientation of the switch...much more than I'd like. As well, the switch cannot be reversed, so that's another way it's locked into a single direction.
So, I'd like to see your 6-button plan with all the button switches pointed sideways. I mean if you *HAD* to put these buttons side by side, your 6-button cluster would be almost 4" wider than is normal.
AJ