I think it's nice!
Mine is not far from yours (I think it was 110/73 at my appointment on Saturday), and after having high bp in my last pregnancy, I am very grateful! It doesn't sound like yours is in the dangerously low range, and it will probably climb up a bit as you get closer to the end.
I think the only negative implication that having naturally lower bp had for me was that no one noticed that it was high until it was REALLY uncomfortable for me. I remember telling my midwife that I felt like my pulse was racing by the 2nd trimester, and she would look at my chart and say "well, 120/80, that's totally normal, I think you're fine -- just try to take deep breaths and relax if you feel stressed." Later I realized that what is "normal" for other people is high for me. By the time I got to 165/90, I was really REALLY miserable! So, just keep your baseline in mind, and watch for changes yourself, and I think you'll be fine.