Kensei are in 5e but they are a monk subclass and but so much related to the old kensei. I played a kensei for a tomb of annihilation campaign a couple years ago and really liked it but since it's a monk subclass you have to like monks. I was a tabaxi which basically meant I was faster than the flash. Monks have kind of a weird growth rate in that the first couple levels they do a ton of damage with the extra attacks they do, then they sort of plateau for a bit, then when they get some more of their higher level abilities and ki powers they go back to being great pretty quick. Also it's weird but kensei monks are probably better ranged monks because they start adding their unarmed attack damage to ranged attacks.
Also, bards are super gay but they are also one of the strongest classes in all of 5e. Damage wise they are on the lower end depending on subclass but their versatility is second to none. I don't like playing bards but I'm always happy to have one in the party. College of lore bards literally have access to every spell in the game, college of valor gets great combat uses of their inspiration (raising AC for anyone who's getting attacked, for example) and college of swords can use his own inspiration to do flourishes in combat to push creatures around. With how vertical bg3 is, you could cause A LOT of mayhem that way. I don't think college of swords is in though? But I'm sure there will be mods that add any subclasses that don't make it in
Also, for me, what makes DND, besides the setting, is just the freedom of options. Last night in my weekly game, we got to a long dead dragon's hoard and the piles of gold came alive. There was this sticky residue that was all over the map but was getting more concentrated the closer we got to the treasure. Turns out it was a sort of slime that enveloped the gold. So I cast wall of water and surrounded basically the whole room in a 10foot tall circle of water. My dm was like... Uh. Hm. This is something I didn't consider and then made up an effect on the spot, basically gave him a variation of being slowed; lowered AC, either an action of bonus action, not both, and reduced the amount of multi attacks the creature got.
That is my jam. When something happens and you find a creative way to alter the encounter that the dm didn't expect
Obviously that kind of playstyle isn't generally possible with most CRPGs but when you do something weird in a game and it responds accordingly, I always appreciate the thought that the designers put into it. And with the 18000 permutations of the ending, I think larian deserves some respect on that front. I mean, I suppose unless it's just 18000 differently colored beams of light in the sky