Personally, I would love to 5e designed in a format similar to Explorer or Deluxe.
1. Page Count: There is a lot of stuff in those 160 page books. Deluxe gives you
a. Design Notes
b. Race Creation rules
c. 16 character archetypes
d. A good fast tactical system that with maneuvers, called shots, Tricks, Tests or Wills lets you do nearly all of the stuff you can do in 4e (push, pull, slide, trip, place effects, lure people in) without 100's of powers
e Rules for tailoring lethality
f. By giving base powers and letting people fill in the trappings, you don't waste page count with countless powers. I might have preferred the list looking more like that of Champions or M&M (without the power modifiers), but with the Savage Worlds blast, burst, bolt approach to attacks.
g. The way edges are handled, you are not swamped with endless feats.
h. one sheet adventures
i. other goodies (interludes, chase rules, social conflict rules)