I think you can very easily see the progression of KOTOR -> Jade Empire -> Mass Effect - > Dragon Age Origins. It’s not all straight lines, but you can see the things they keep, the things they tweak, the things they cut, and the things they bring back.
I love Jade Empire. There are a lot of things I think could have been better, but I do really love it.
The combat was cool, and I liked the different styles, and the fact that you were not going to learn them all in a single playthrough. It also incentivized switching between hand to hand, weapons, magic, support and transformation in ways that still allowed each type to feel like it was useful and filling a niche rather than being the kind of samey rock paper scissors bullshit that many games use. That said, the balance was not great, and some options were significantly better than others, to the point of making some things seem almost useless. Most of them are usable, but if you try them all out you’ll find that there are some you will probably never use again. That said, on replays I would always pick white demon for my martial style even though objectively it’s the worst choice because I found it more fun and challenging than the other two.
Story-wise, the companions were fairly standard for Bioware games. I don’t hate any of them, but I also can’t say I have as much of a connection to them as I have to HK-47, Jolee and Canderous, or Garrus, Wrex and Tali, or Alistair, Oghren, and Morrigan. It’s not that there’s something wrong with the characters, as much as there’s just less opportunity due to the way Jade Empire handles them in gameplay. Unlike those other games, you only get 1 companion in your party at a time, so there’s no banter between them while you walk, and just less interaction with them overall.
This is made worse by the way the game handles combat for them. Followers can be set to fight or support, where they meditate to give you a bonus but leaving you to fight the enemies alone. A neat idea in theory, but the problem is that fighting really just translates to them distracting one or two minions until they get knocked unconscious. They can’t stand up to anything tough, and they will not be dispatching enemies, just acting as a momentary distraction before they fall (even the two that are combat only and are supposed to be incredibly strong). In support they will each give you a different bonus. One scatters bottles around that temporarily let you use drunken master style… which is not better than what you already have so it’s just a novelty. Two others slightly increase your damage with either weapons or martial attacks. And the remaining three each refill one of your resources (health, focus and chi). Since Chi is able to heal you and increase your martial damage, and powers your magic and transformations, that chi restoring character is by far the most useful, with the focus restoring guy being a distant second since it allows you to slow time and is needed for using weapons.
If I had one suggestion I could send back in time it would have been to allow 2 or 3 followers at a time, with a dedicated combat slot and a dedicated support slot so that you can have a larger party and less incentive to just pick one character to the exclusion of everyone else.
The morality system was a great idea, but like Mass Effect, there is a clear disconnect between what they describe it as and what it actually is in practice. The way of the open palm is supposed to be altruistic, while the closed fist is supposed to be about strength and growing through conflict and adversity. They aren’t intended to simply be good and evil. The problem is, you get lots of pointlessly evil options that don’t correspond with that philosophy they describe, and yet they still give you closed fist points. In fact, I struggle to think of a single time in the game where you couldn’t just replace the open palm and closed fist points with light side and dark side points and get the exact same result. It’s a shame, because it would have been great if they had more of a focus on the competing philosophies, with times when open palm might seem less than ideal, and times when closed fist comes across as respectable in its own way. In fact, I would have loved it if they’d had open palm, closed fist, and a third hidden stat for just being a dick, and had people react to all three.
One other big difference is the pacing of the game. The others all start in tutorial town, then move on to a second area which launches you on your quest, then opens up the map and lets you pick which order to do things in, before taking you to the endgame. Jade empire technically follows that description, but the part where it opens up is basically just letting you choose between 2 options, so it’s not nearly as dynamic. And based on the number of places which are frequently mentioned but never seen, I suspect there were multiple areas which were cut from the game.
This isn’t necessarily a bad thing, there’s nothing wrong with the pacing, it’s just notable once you’re familiar with that classic Bioware formula.
Overall, I highly recommend Jade Empire. It’s fun, it has an engaging story, an interesting world, and a lot of that old pre-EA Bioware charm.