So, it's okay for TOS to have only 3 main characters, but not VOY?
The shows are 30 years apart. Television is lightyears (pardon the pun) different than it was then. Nowhere near as much character development.
While Voyager was running in the 1990's, the number one syndicated show in the US only had 2 leads.
http://www.youtube.com/watch?v=zNFLrSVNh48
I don't quite get the point of "2 vs 3 vs X" number of main characters. No-one ever said this show was about 1 or 9 people. Sure, those with their names in the credits look like "costars", but no-one ever said they were equals. Did you think Guinan or Geordie or even GASP
Data was as important as Picard? I sure didn't. (And yes, I watched TNG during its first run from beginning to end.)
As for who should/shouldn't be a main character... I look at the dept heads as prime options.
I hated
season 1's TNG for its LACK of a main character as chief engineer. I couldn't name that guy if my LIFE depended on it! (I can see him in the background watching Wesley dismantle something "important" in an ep where everyone went off their rocker. Otherwise, I can't remember him at all.) I nearly choked when in season 2 Geordie was promoted from Ensign? Lt jg pilot to CHIEF Engineer, but then reasoned it was better than "nameless dude in the background".
As for the question of not relating to a future where peace reigned... the gap between that ideal and our previous 20th or current 21st century reality is equally vast. But no iteration of Trek was saddled with shows absent of conflict. Those ships move on to other cultures and territories who haven't yet learned to "play nice"... and when they don't move like DS9... they have enough nonFederation citizens visiting to insure strife is never far away from our Officers.
I don't know why some in the Trek community are negative about 1 show over the other... all I know is that I loved TOS, and came to love TNG, and really liked DS9 because it was taped each week by a friend when she taped Voyager for me. That's how I finally got to see the "grittier" Trek on a regular basis. Enterprise had its moments, but it was never a must see for me and I regret that.
Then again, perhaps its been good for all of Trekdom to go on this prolonged fast, so that we stop being jaded about the stories and so the producers/writers stop being hobbled by rules the original producer laid down 44 years ago.
http://www.youtube.com/watch?v=XNnOeBXAhls
As for how
I feel about Voyager, it has been my favorite since the first season through to the final, and that's
not hyperbole.
http://www.youtube.com/watch?v=hHTxQTSjc_M
That's fact.