I found it strange that the modern TRON felt so much more lifeless and drab than the original's, given the limitations on the original's technology. The worldbuilding was flatter, the characters were extra flatter, and the villain's plan didn't make any sense.

I almost wish he'd succeeded so that we could have seen Clu's giant digital aircraft carrier trying to squeeze through that laser emitter and cram itself into the basement of an abandoned arcade. Either it would wreck itself instantly or it'd come out as a wee little tiny thing, equally amusing outcomes.