I would not have minded if Tom had gotten more screentime, but as it is, he's one of my favorite Star Trek characters. He never got dull or annoying, and I really enjoyed the dynamic he had with the rest of the cast. I feel like he had chemistry with everybody, and Tom and B'Elanna remain to this day my favorite Trek couple. At least B'Elanna was bitchy because she was half-Klingon. What was Keiko's excuse?
Actually, come to think about it, one thing that really disappoints me about Tom is how little we saw him interact with his father. I would have loved to see a "welcome home" scene where Tom and Admiral Paris reunite, and Tom introduces him to his granddaughter.