Unfortunately Tomorrowland is becoming Yesterdayland. It could really use some freshening up. Leave SM, TTA, and CoP, but bring the rest of the area up to the theming of what Tomorrowland is supposed to be.
My favorites by park....
MK - Hall of Presidents great for a 20 minute nap.
TTA - Relaxation at its best.
EPCOT - American Adventure 20 minute nap.
Studios - Watching citizens of Hollywood perform while resting on the park bench.
AK - Flame Tree great food and a shaded area to rest and...
My wife and I can't visit EPCOT without stopping by the kiosk across from chefs De France for a frozen orange gran margnier. They are amazing especially on a hot day.