I think there ought to be a little more shading in the poll choices. It's practically a choice between EVERYTHING IS AWESOME, EVERYTHING IS RUBBISH and MEH, I AM UNDECISISVE (plus the mandatory options that have nothing to do with the actual quality. why would you give an option to people who haven't played the game? they just shouldn't vote at all!).
That said, my breakdown:
-Story: Solid main plot that introduced the token "you have to go four+ different places to collect something, something important happens after the second to last, and then you go to the final confrontation which is linear" structure that was pretty much the backbone of most BioWare games for a while, so at this point it wasn't boring and predictable. The plot-twist is pretty much legendary, so there is nothing much to say about that one, though if you were at least a little bit genre savvy it could be seen from a mile away. Overall, it was good.
-Characters: You have Bastila, who was a pretty decent character and Carth who had a good back-story that never really amounted to anything. They were also the only two romancable characters, so they got the most screen time and character development, so they were okay. The rest, while relatively interesting, were mostly two-dimensional characters (or non-characters in the case of Zalbaar, who was just the Wookie of the team and T3-M4 who was just an R2 expy without any of the character of the latter). We also got HK-47, who was funny but once you ran out of his repair-conversations he didn't amount for much. Overall, the characters were passable.
-Technical details: The game was prone to crashes when it came out, and that is pretty much the fault of the engine itself. Thankfully the patched version on modern machines is pretty stable, but it is still an unoptimized mess that can slow down even of machines four times the recommended specs. The graphics also didn't age well, especially the textures, though at least some of the character models kind of work because they have a slightly cartoony feeling to them. In fact, I think the game would look quite acceptable even today if we could somehow slap some cell shading effects on the engine. It wouldn't help the animations though, which are very distracting during conversations, especially after the much more polished later BioWare games. Overall the technical details of the game are quite dated and rough by today's standards.
-Gameplay: The system works, I am not debating that, but it really doesn't work well. The action is choppy and the game is pretty unbalanced, with grenades being almost completely useless, a very limited upgrade system, almost no random loot and a pigeonholed skills system (Your MC MUST have Persuasion maxed, since he/she is the only one who can even use it, and the rest can either go to Computer Use, Lockpicking or Repair, as the rest of the skills are totally useless and if you REALLY need them for a specific situation, you can always take a companion that has them). Overall it's playable, but it's sluggish, unbalanced and kind of tiresome after a while.
So, as an overall measurement, I would say KotOR was a good game for its time, and it's still playable today, but it was a product of its time and it's not as good as the nostalgia goggles would make you believe, although still a decent one with a story worth experiencing.