I beat Ameya's story last night! It was a pretty good ending finally, though it feels like there's not really any reason for it to have been so difficult to attain. It's not like the hoops you jump through add to her scenario at all, so it's just kind of a weird prerequisite. Followed
Astral advice on the most fulfilling ending and can agree it was a very good conclusion to her story, though I'll check out her other endings that branched off from there later. Wasn't able to get full magic back unlike my previous run which I thought was weird though, not sure why the mana-filling scenario didn't match up to my last ending which let me get all the cats. So no Tower magic :(
On the subject of difficulty, I think you're just given so many tools and abilities to gain the advantage that it really can be made trivial, but that is also the perspective of someone who just finished their
tenth playthrough lol. I felt competent but fairly challenged for my first several playthroughs, and constantly found great uses for the toolkit throughout my adventures so don't agree with the idea that Coalescence+combos is some kind of win button generally speaking, and I think general impressions from the community suggest it is still a difficult game for the average player. I find it easier through the use of an expanded toolkit, not some innate ease of the system.
I still think deflect is one of the most important abilities in the game (parry not so much), I think changing formations can be very advantageous in difficult encounters (early on when you lack the toolkit to say defeat a strong dragon throw on a defensive formation and it helped tremendously), and they can also change up your entire playstyle which is a lot of fun. Conditional techs never stop being important because so many (all?) are unblockable, they tend to be stronger than other attacks, and they can help you break up enemy combos (though you really only need to worry about 3+ combos or if it's the boss getting involved in a combo) or make your own (chain attacks are life). I can definitely attest to having high quality equipment making it much easier, too, as my B+F low equipment run was much more challenging. There's other fun things you get access to throughout the game that let you build up your strategies to break the game, but I didn't think this was the default experience. For example my party now has 3 silver watches, so by turn 4 I have 3 characters with a -1 BP cost, and I also gravitate to the Speculation formation so those characters might have a -2 or even -3 BP reduction. It's a lot of fun having someone do a showstopper with 8 2H gun/sword techs and just deleting what's supposed to be a super boss. On my Mido party I also had souls for BP reduction so that party is outfitted pretty well too (I wish I had put those souls on Boh for my Ameya run though!). I have multiple weapons that raise overdrive activation rate so can honestly just get those two characters in a combo and probably get an overdrive, much less a bigger combo. With Siugnas you can recruit a character whose support role does the same! Also there's an item you can acquire through trading that does the same. Having access to good techs is always important too, I like having two characters that can knock down defense, as well as a way of lowering enemy attack. I don't mess with magic much, but Hasten Time is
critical because it gives you +2 BP, and can be pushed down to 1 round casting time, so if your formation can't build BP like with Speculation and there's no adds to kill, you can still build it up. Early in the game I used Song of Souls to increase my attack a lot but I don't make much use of it anymore because my powerhouses just don't need it.
So yeah I've mostly been able to steamroll the game lately, but I'm also excessively well outfitted for it lol. Party composition is super important here too, though. I didn't struggle with my Ameya run but also am nowhere near as capable with her party as I am with Siugnas/Mido, even though I have all the same equipment and stuff. I wouldn't even try the Mr S trials with her, even though with Siugnas I started just casually mopping them up whenever visiting the Junction to see if I got any cool drops. B+F I intentionally limited myself but their immediate party composition is pretty bad, and I found Diva's pretty insufficient too. At the end of the day I find the battles to be very engaging and the systems can still be volatile and fun to manage for the most part though.