It's not necessary and that wood look is ridiculous - not in keeping with the modern swooping tent and metal design at all.  Sure make some adjustments and upgrades here and there but a total redo is a waste of money.  Moving TSA to the 5th floor is stupid - I thought they would move one TSA in the basement near the train terminus and let people go directly into the train tunnel waiting area instead of having to go upstairs (assuming no checked bags).  NO ONE is going to go "shopping" after passing thru security - people are naturally programmed to head straight to their gates.  I do, everyone does.  Get a grip.  ps:  people love the bridge TSA on "A" but of course these fools want to close that.  Geez