... No it wouldn't.
Not for me, anyways. Lakers v. Pistons would be way more interesting. A young team led by Kobe Bryant, a second potential dynasty in the making against the old dogs of the league, a team that is on its last legs but has gotten it done before. Rocky Balboa-esque, in a sense. But they've been one of the two consistently great teams in the league in recent history.
The Pistons playing for one last hoorah, or a start to another championship run for Jackson and the Lakers. Great stuff.
The Celtics do have *some* interesting story lines going on, but none of recent relevance to the league. The Boston Three Party have all been would-bes up to this point in their careers, and the Celtics franchise has not mattered in a long time. The reason people will find it interesting (aside from the fact that they're both large-market teams -- Detroit and SA are not) is purely for the nostalgia for the old-time greats of the NBA. Pretty much appeals mainly to older generations who have become disenfranchised with the league as of late, which I know there are a lot of on this board. That's all well and good, but that storyline simply doesn't currently matter.