Currently replaying Fates (specifically, Conquest)... I had forgotten just how much the game's direction is all over the place. I'm not even talking about the story: I'm talking about the gameplay.
While the maps in Conquest are among the best of the series, gameplay-wise, the game is riddled with bizarre design choices. The inclusion of the "Your Castle" feature is one of them, as it gets old very quickly. You can gain access to a wide variety of items (and one can't deny the utility of some of them, especially for character who desperately need those in order to be usable, like the Goddess Icon to fix Arthur's luck (or Corrin's, if Luck is his/her bane) or the one which rank up one's weapon mastery, useful for anyone who changes class) by farming visits and battles, but doing so take ages. Since you can't grind in Conquest, if you want to access some Paralogues and children (I am not going over their poor story inclusion), the only way to do so is through Castle maps (or the free DLC map). And if you take on some Paralogues too late, some may become downright impossible to complete (or at best incredibly tedious) depending on the difficulty (Ryoma's son in Birthright says "hi!").
Characters' balance is all over the place, with the royal siblings overshadowing everyone else in stats and growths (not to mention unique weapons), making them de facto "Lords" (well, they are, actually, so... yeah, forget about that sentence). And there is the Revelations debacle (from what I've read), with some units being blatantly shafted and joining with poor stats...
The new weapon triangle was a good addition though.
Honestly, I am hoping that the next Fire Emblem game will offer a more streamlined experience with tighter gameplay, less DLC nonsense, and a better story. Echoes was a step in the right direction on some aspects, but gameplay-wise it isn't the kind of Fire Emblem experience I'm looking for.