The opening titles
On the channel where I watch this show (guess where?), it's preceded by "Mary Tyler Moore" and "The Bob Newhart Show". Several of the producers and creators from those two series went on to make "Taxi". But coming after the stylish, obviously well-financed opening-titles sequence of "MTM" and of "TBNS", the opening of "Taxi" looks awfully slapdash and low-budget (and is very short), as if they'd had to throw something together at the last minute. (And, sadly, the Bob James theme music seems limp and uninspired compared with a lot of his mid-1970s recorded work.)
To me it comes across as cheap and generic and doesn't suggest to a new viewer that, "Hey, we've invested a lot of pride and talent in this show and you should check it out." Surely, after years of success with "MTM" and "TBNS", those producers/creators must have had a decent budget to work with. It just seems like a series as good as "Taxi" deserved an opening that had a little more flair.