I will repeat myself, and recommend that you take a look at Breath Of Fire V Dragon Quarter. I think you may find it interesting.
- No grinding. Enemies do not respawn and there are not random encounters. You are rewarded for luring monsters together and fighting them at the same time, taking more risk but gaining more rewards.
- Limited Resources. There is a maximum amount of money and consumables you can find, and a limited inventory space. Cannot farm for money.
- You can use traps and bait before combat to gain advantages. Of course that means you can see the enemy on the field before you fight them.
- Combat is turn-based, you have AP which you use both to move your character around the battlefield and do actions like attacks or using objects. Quite a lot of unique mechanics like combos which can lead to new skills among others.
- The battlefield isn't different from the field, in other words, in contrast to other jrpgs, combat doesn't take place in its own separate space from the game's world. Related to the third point, all traps and lures not activated before combat remain in combat and can be used or picked.
- 3 pre-defined characters: A fighter, a mage and a gunner, but very different between each other (and to other games), and making them work in tandem is essential to win the game.
- Good customization. Numerous weapons, armors and accessories. Weapons have different skills slots to customize what your character can do. Things like the length of your sword can be vital when it comes to combat.
- The game is practically a long dungeon crawler where resources management is essential to survive. There are limited saves too, so you have to know when to takes risk or avoid them.
- Heavy punishment for dying. Often times if you die you will have to start the game from the beginning in a sort of NG+ called the Sol system. Depending on how far you got, you will receive a score, which unlocks new cutscenes and hidden paths which lead to special items. and if you have saved some EXP without using it you can level you characters in the new play through with that.
- Despite this, you can beat the game without dying and a single playthough, as I and others have done it, and it isn't a case of using very specifics strategies or exploiting the game, just being tactical in combat. You can beat enemies at level 80-90 while being level 30+ (though you will probably need to stock up in consumables and find a way to avoid getting kill in one hit each turn)
- Good replayability. As I said, dying or beating the game takes you to a NG+ with new content depending on how well you did in the last run.
- Whole game is in a timer, which moves foward even in combat. To win you have to beat the game before the time runs out, but it is quite generous while still encouraging the player to keep moving foward and choose between wasting time but taking no risk, or playing dangerous but going fast.
- Related to this is the "D-Dive" system, a powerful transformation that is pretty much a "I win" button, but that will consume part of your remaining time. Knowing when to use it can be the difference between a game over and a successful run.
- Not meaningful choices, a linear story, but the story is as minimalist as it gets. Once the game proper starts (when the timer kicks in) there are almost no cutscenes, and the ones that are there are very short and to the point. Is gameplay for 95% of the game.
- Dark and gritty story about a distopic society living under the earth for so long they believe the surface is just some kind of legend. Of course the objective of the game is to reach said surface.
- Protagonists are teenagers, but the writing is not juvenile at all and the situations of the protagonists are used to showcase how shitty is the world they live in.
As side recommendations of unique jrpgs that depart from the classic formula, I'll recommend Vagrant Story and Parasite Eve 1 and 2, which are single character RPG with adult main characters, and in the case of Parasite Eve a mix between an RPG and Survival Horror.
PS: For BoF Dragon Quarter you want to play the NTCS/US version of the game, they fucked up the balance in the PAL/Eu version by changing things related to the save system. US is closer to the original JP.