Got a friend to start playing their first ever SMT-esque game - Persona 3 - and two things stand out to me:
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It's so wild watching someone who's used to mostly action games using items in jRPGs. P3, and MegaTen as a whole, are pretty stingy when it comes to certain items, and you absolutely need them in some places, so that's a swift learning curve (and makes a pleasant change from the classic "hoard all your items for the final boss" jRPG player!)
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SMT skill names are fun and absolutely nobody has any issues understanding what Agilao, Mazionga, Megidolaon, Recarmdra, and so on mean. :)