Well that sucks. Atlus have been doing some questionable stuff for me as of late. They're obsessed with Persona and don't give the rest of their IPs the time of day anymore.
What are units like? Is there different jobs/units and plenty of different enemy types. Does the map terrain and weather make any difference? How are the weapons? Are they all just blades or is there a good variety of guns too? Is there any chance of characters teaming up like in Ragnarok Tactics? Since Ragnarok Tactics is the style this game is giving off at the moment. Is there branching story paths or is it linear?
If you check out the trailer, you can see some of the weapons in action:
https://www.youtube.com/watch?v=QzngEtR5itQ
There are guns, daggers, swords, rods, staffs, spears, etc, but they're pretty locked down by type of character you choose. Most characters can choose from two types of weapons, and their job is set by the story, but you can pick which ones you want from your pool of characters at the beginning of each battle. Terrain does make a difference (you can also see that in the trailer when Yeng-hua, the girl in black and burgundy, moves), but there are no weather modifiers.
Characters team up in SN5 via Summon Assists. Before you do a summon, you can hit square on all the party members nearby in the range indicated and it will add range or power or other things to your summon (which is the magic of this game). Even characters who have used their turn can help your summons with summon assist.
Story is linear, but it uses affinity, so you can get one of more than a dozen endings (plus the bad one) depending on which character you develop the best affinity with. Some of your things carry over to new game plus, too. If you want to see all the endings, it's easily 100 hours or more of gameplay.