I personally like the uniforms better than the ones that came after. Those latter uniforms looked to me more like a marching band uniform
You have a point there. That said, the later uniforms remind me of some old British/English army uniforms with red tunics.
At the heart of the concept is a storyline that epitomises what Star Trek is all about: the unknown, the unexplained, seeking new life-forms and making peaceful contact..... people have long criticized it for not being a action-packed shoot 'em up like much of TOS was (let's be honest, for all it's philosophizing, TOS is well remembered for scenes of the characters either fighting or f***ing, to put it bluntly
), but the reality is that TMP taps into Trek's more cerebral streak. Leonard Nimoy used to call TMP a 'tone poem', and I think that's actually to it's benefit. All these many years later it's a plus, a selling point, something which makes it stand out as something completely unique among the rest of TOS and the TOS movies. It's certainly not a bad thing.