I started Disgaea 6 on the Switch today (I doubt it's going to be a permanent exclusive on that console in the US, but for now it is). I had my reservations, since number one, it was designed for a console with higher specs and this is technically a port (there are framedrops, but the game's settings actually have a measure to cut down on that during grinding), and number two, the game itself radically changes many aspects of the formula from the previous entries. Some creatures take up multiple spaces on the battlefield, levels now go into the tens of millions, aptitudes are now invisible (sort of like EVs and IVs in Pokémon, though they probably won't affect things all that much), and there's an auto battle system in the game that is actually somehow more complex than the Gambit system from FFXII.
It especially took some time to get used to the way leveling up works, because it's very different from previous entries. Veterans playing this for the first time will likely be shocked when they see the stats they start out with at first level (with everything in the five figures). And they'll be even more shocked when they go through the first battle that actually gives experience and all of their units suddenly gain several levels upon completing it. Battles award experience at the end of the battle now, instead of after each enemy kill, meaning it doesn't matter who gets the kill as long as the unit was on the battlefield, which actually makes leveling up newer units much easier.
It is no exaggeration to say that the main character will be well over level 100 at the end of the first Episode. This makes several tricks that people used in previous Disgaea games to power level pretty much useless. The level 99 power leveling trick that's been a staple of the series really doesn't accomplish anything this time around, because you're going to be outpacing it almost right out the gate. This might scare some veterans because the power leveling station they're used to using to sail through the main story battles effectively dries up because of the changes. But with the other systems, this really isn't an issue at all.
Overall, it's still a pretty good game, and it still feels like Disgaea, despite the changes. There's enough humor and the constant in-story metagame references are always entertaining to see.