They still need to tear it down an re-do it. It doesnt have to be anything outside necessarily but because of Jurassic World it could start to feel out of place or un-refreshed much like Jurassic Park River AdventureI disagree a bit. IOA has always been lacking nice, air conditioned, calm experiences. Pretty much every attraction is either A.) outdoors B.) thrilling, or usually both.
The only exception I can think of is Poseidon's Fury. (I would count Sinbad as partially outdoors). I suppose the Hogwart's Express also counts, but it's not strictly within IOA
The Discovery Center could use some upgrades, to be sure, but it is a fun area to get out of the heat and has some kinda? educational aspects to it.