The problem for me was partially the characters / development, but partially the cast.
In DS9 difficult to take to characters really grew on me through the strength of the writing and some great performances - i.e. Sisko, Kira and Odo. Even supporting characters like Garak and Rom came into their own.
In Voyager, Janeway, Tuvok, Torres and Neelix ended the series just as unlikeable as when it started, and the majority of the rest of the cast were just making up the numbers.
Paris and Seven were OK, Chakotay could have been interesting but really wasn't, Kes was insipid and Harry was bland. The only character I really liked was the Doctor...
I do agree that the doctor is funny ,,,, and chakotay is a very interesting character as well maybe it was an inspiring as Harry but he was bland I do agree there,, and Seven is very interesting character as well,,, Sisko Cara and Odo,, are very supportive characters have very strong,,, Garak and Rom honestly came their own characters,,, in DS9 but even Voyager's characters are pretty inspiring as well with all due honesty,., From the beginning of Star Trek,,, to the ending of Star Trek,, and all the things are in between,,, they all have a place,,, In thier acting skill,..