The GB-era Fire Emblems are very good to play now, and often a cleaner experience without the baggage of the current titles. Thracia can be a bit inscrutable but excellent. Berwick Saga is really where the max hardcore is at.
All things considered I like Engage's gameplay. The Emblems give huge flexibility for fun builds and there are some fun builds to work with and a decent challenge for them in Maddening. It remains a godsend to be able to skip every single cutscene. I didn't think anything could get even more offensively stupid than the opening scenes, but the later 'twists' are even worse. It's like some barely literate pedophile with brain damage tried to write a Teletubbies episode.
gamerguy Corrin has even better synergies with thiefs - e.g. Yunaka can literally go anywhere and attack anything after dropping fog - but there's also fun things to be done with Draconic Hex; you can stick Corrin on Ivy or a Longbow character for example to hex / immobilise groups of enemies from far away. You can even inherit Hex on a Lucina character and have them Backup graze everything you ever touch to put Hex on the entire enemy army. (Also if you want story there are a million better stories out there in so many different media forms, or even in video games, than anything Fire Emblem. Three Houses is still dumb as fuck, literally better to watch a Nickelodeon or something.)
Some "laugh in the face of Maddening" setups I've found, though by no means optimal:
- Panette is the enemy phase chainsaw murderer this time. Wrath / Vantage / Ike = 100+ damage smashes on everything.
- Martial Master + Lucina = 100% Bonded Shield. Find a way to keep the Master themselves fairly defensible (e.g. Dual Support) and you have 5 practically invulnerable characters in enemy phase.
- Halberdier + Elrika + Brave Lance = often guaranteed quad-hits for 70+ or even 100+ damage on all late game bosses
- If you happen to get an Olwen S ring by luck - any high Mag low Spd mage with forged Thunder tome for auto doubling will smash any armour user right until endgame. You can even do this with Lindon and use their personal skill, and maybe combine Wrath / Vantage, and you'd have a 100% guaranteed double crit thunder user able to retaliate any attack in 1-3 range!