I have both an LCP and an LC9, and don't mind the trigger other than the long pull (I'm just used to 1911s).
I have heard that the triggers on both guns get better (as far as any grittiness) with the more rounds you put through them.
Having said that, I would advise against altering the trigger on anything used for personal defense. A trigger job/smoothing would be ok, but drop in parts, especially ones that make the trigger pull lighter, are bad news IMHO. Anything you change on a defensive gun, you may have to answer to in court. I would prefer to not have a "tactical disconnector" or some other such part come back and bite me.