Okay, here's my commentary.
TOS is awesome, but full of cheese. The only important things that come from that are the movies. They are amazing. And Khan. I had a huuuge crush on Khan when I was mini-dezra, just cause of that accent. Given, I have that again, cause new Khan is played by Cumberbatch, and that's even better.
TNG is also awesome, in some ways better than TOS, in some ways worse, some episodes are positively boring. The movies for TNG are better than the TOS movies. I loved Insurrection and Nemesis. I loved Nemesis alot.
However, I love Voyager much more. Voyager was almost never boring. Because at no point was it ever Business As Usual. Also, Warship Voyager. Hell. Yes. My Star Trek Online character's crew uniform makeup is based on the costume design from that episode. Soooo goooood :3
I stand by the assertion that Enterprise is not a real Star Trek show. It's crap. Really crap. Apart from the Borg episodes that tie up loose ends to First Contact. That was clever.
And DS9 was horrible. I mean all that was was a huge collection of business as usual, interspersed with suddenly war with really boring opponents. It was like the Romulans and the Klingons all over again, with less charm. Far less charm. In fact I would go so far to say that the Cardassians, Dominion, and Breen were the most dull aliens Star Trek has ever produced.
As for Picard looking the same now as he has for like... ever?
When you reach max level, you stop leveling.