I'm a big fan of "Death in Paradise," but Humphrey wasn't my favorite DI in the series. His little quirks and foibles in that show were annoying at first, but seemed to lessen as his tenure progressed. Now, we're in a new series, in a new place, with new characters, and it's as if he's regressed even farther than when he first appeared in "DiP." The character's social awkwardness, physical clumsiness, and use of random scraps of paper to record vital information were kind of entertaining when I first encountered them years and years ago, but in this series, they don't make the character charming, endearing, or engaging - mostly just annoying. I'll give it a few more episodes in hopes it will evolve into a show that really pulls me in.
That said, the rest of the cast is good, but a few of the characters seem exaggerated. The immature young officer and crotchety female assistant felt a bit overdone and I hope that gets toned down over the course of the season. We'll see. It's definitely worth giving it a try, though.