I know this is a thing of yours but think about those old buildings teams used to play in I would argue almost every new building provides less of a HCA then the new ones. OF course having a better team makes a diffrence them Spurs have been good for over a decade home and away including impressive runs on the infamous rodeo trip ...
If you watch clips of Reunion Arena (Dallas), the spectrum (philly) Old Boston Garden, the Forum, The Salt Palace etc. I Would hate to play in those old places a lot more than the pristine new places Like Staples and TD Garden that has take over. Better fan experience but less home-court advantage ...