If it ain't broke, don't fix it. And I don't think it's broke. I can't see any difference in these designs beyond the colour of the engines, either.
USAirways is about right, minus the good bits. I've also seen comparisons to the old Trump Shuttle livery, which I think is really stretching things just to take a pop at the current President.
Either way, I find the designs deeply uninspiring. For a head-of-state aircraft, I agree that that's not necessarily a bad thing, but I'm sure they could do better.
Maybe it's the 747-8's shape, but the whole thing looks a little off, as if it's a very early draft and needs a good going-over by someone who understands proportion, etc. In particular, the placement of the UNITED STATES OF AMERICA text just feels wrong, too far back, though it looks as if the upper deck exit is the cause of that.
To be honest, though, I expected far worse; seems there were some adults in the room, which is more than can be said for AA's new look. Some flair, while avoiding that crassness, is entirely possible. Hey, Azerbaijan can do it:
Let him that hath understanding count the number of the beast:
For it is the number of a man; and its number is One hundred threescore and twelve.