Hmm.
Depends on what you're looking for I guess. If you're expecting an open world like Elder Scrolls where you can't go ten feet without tripping over something and finding a whole bunch of different dungeons, then probably not. FF15 has a finite set of dungeons, the post-game content is OK but: a) the sealed dungeons are really bare bones, b) there's only one really unique hidden dungeon that's legitimately challenging , and c) most of this post-game content should have been available before finishing the main story anyway.
Sidequests might wear on you as they all tend to follow a tired "go here, fetch this, come back" design:
Hey buddy, could you go find this dog tag for me?
- *talk to tipster, get location, go fetch tag after fighting predictable monster, return to NPC*
Thanks, buddy!
- *NPC moves to different location, gives you a quest doing the exact same thing*.
This loop this sums up the design of all of the sidequest including hunts, except hunts only require you to kill and return rather than kill, fetch, and return. So if this doesn't sound appealing to you, you may find the side-content not worth playing... the problem is the side-content makes up a HUGE portion of the overall game.
Combat starts out strong but then, in my opinion, falls flat because of dungeon design. Combat is great in open world areas where you have a lot of ability to warp around and point-warp to spots... but this all changes in dungeons where you're continually pushed into cramped spaces. Warping retains its fun factor but feels a lot less useful because you're constantly fighting the camera and lose the ability to really manage frantic fights through point-warping. Instead, you're pretty much relegated to chugging Exilirs like an alcoholic and spamming link strike. In the larger dungeons like Costlemark, the fundamental flaws of the combat and camera are really on full display.
All that said, I enjoyed it but it's not without a LOT of frustrations.