Goofy idea to review game after year is totally good idea trust.
tldr is started for good, ended by shooting yourself into leg twice.
simplest way to explain issues is describe members.
Remilia:
Claw fine, Kiss too, Chain Gang useless at all, Ceiling Fear too, all spell cards also bad
Flandre:
can't properly tell because auto attack and half of skills have description
Sakuya:
Throwing Knives fine, Vanish too when work, Bounce useless cus Throwing exist, Close up magic useless, Misdirection fine, Ripper fine, Perfect Maid useless, first 2 spell card useless, agi cards fine, Scarred Soul fine, World weeird.
Patchy:
useless 90% of time
Now detailed explanation why most of members bad:
1)Battle system
due to game being ATB or active time battle most of skill requires charge time and it's super lethal for patchy, by the time you use Chant-high level enemy move like 5 times and 90% of time you will dead/disabled, so most of time she have no skills, same for most of spell cards requiring so absurd time to use half of your moveset useless (or even something simple as BUFFS REMOVAL, seriously that item so slow bosses kill you faster).
2)Enemies
you can't disable them. At all, they have 97-99% resist that makes you wonder why stun/paralyze even exist in first place. Outside of that other states also have massive resists + their moveset much much stronger than you (final boss so stupidly strong i just dropped him, 90% resist to drain attacks, passive degens that not disappear, and on 120k force use spellcards when she can easily recover yourself while you charge them is stupid, 20k HP + Flandre was casually dying so other members were also shredded like nothing, also 800k hp when only % damage is 2% and other moves deals like 10k damage per usage makes it very very stalling and painful)
3)equipment
regens triggers rare so mostly weak, hit buff same cus you don't even know if some skills suffer from accuracy or not, damage buffs fine, luk useless as parameter so same,
4)items
no mass revive, no stat buffs, x2 gold appears so late it's useless too.
Overall first 2 bosses was like 6.5/10, patchy was 3/10 immortal books was super annoying and recovery didn't helped, rest of game like 4, reisen with mass sleep or 16k mass damage because lunatic eyes 2/10, final boss 1/10
overall game is like 3.5/10 painful experince when you closer to end.