Disappointing, but some consolation is that due to the way the place is situated, you're not going to be spending a lot of time outside looking at it. The dual roadways on the outside are bustling with traffic heading in and out of T5, and the ground floor of the Saarinen building, unless they heavily modify it, only has windows in the central area between the two hotel blocks. The only place you'll really be forced to look at it will be in the former lounge and bar/cafe areas on the second floor, where it will unfortunately further block an already constrained view.
Like a modern cruise ship this thing is designed for the experience inside without much thought to external aesthetics. And, let's be real, it's an airport. Other than whatever else ends up happening in that central area where the Connie is supposed to sit, I can't see people relaxing outside at least on the ground. The pool and observation deck will be on top of one of the hotel blocks, so their look won't factor in.
AB3, DC8, DC9, DH7, D10, E90, M80, M88, 320, 321, 330, 722, 737, 733, 734, 738, 747, 744, 757, 752, 753, 772
AA, AF, B6, CO, DL, EA, EI, FI, HP, KM, LX, MS, NW, OP, PA, TW, UA, US, VS, W9, WO, YX