1: A bigger ending

Having The Undertaker, one of the most iconic superstars in SmackDown history, come out to close the 1000th show made a lot of sense. Having him cut pretty much the exact promo he has been cutting for the last few weeks on Raw, however, was a little bit of a disappointment.
SmackDown 1000 was a really enjoyable show, but it never really felt like a celebration, and having the show close with some sort of bang could have provided the brand with another iconic moment to celebrate in the future.
Instead, we got given the usual 'Rest in Peace' shtick from The Undertaker, and the show closed with him stood at the top of the ramp with his fist raised, which is basically how every episode of Raw since SummerSlam has closed. He didn't even bother addressing his history on the brand, instead, he just mentioned his match at Crown Jewel and that was that.