First of all I should congratulate you on sucessfully completing a 27 parter. With a consistently very high quality.
I am not going to do a first impressions / beat by beat thingy, first of all because I am not good at it, and second because I would be typing for months if I tried
So, for the series as a whole what I liked most is the varied cast. Each hero, but also each enemy, was refreshingly unique in character, psychosis and in abilities that the stories kept being fresh. Even when you brought some of them back for an encore.
Second thing I liked is the different trans (it *is* whateley after all) experiences of the main characters. Some were happy immediately of having their inner and outer self matching. Others realised more slowly that there was in fact a match. And a few where not all that thrilled but accepting of the inevitability, and willing to accept the positives along with the negatives.
Third thing to really like about this series is how the enemies where all suitably menacing and dangerous without veering into disney villain territory. Each of them had their own reason to act evil. Maybe because they were driven by a psychotic need for revenge against imaginary foes, or because they were utterly amoral profit driven and so many variations in between and beyond. It kept the stakes high and made it possible to have them return in different combinations without the story getting stale.
Fourth aspect I liked was how their particular moral (or psychological) flaw influenced their strategies, or at least tactics, how it limited their use of powers and ultimately created the weakness through which they could be brought down,when the stories each spent great time and emotional investment into showing that the superfluous comic hero approach of "face. punch. punch. cheers" could not work. It is after all (to me atleast) always more fun to read about a smart protagonist than about impervious ones.(especially as that also means impervious to change).
Fifth, to match the final installment. The build up to the battle royale, was excellent. Building up the general tension, the horrific aspects of the barron, the first hurdles to overcome, the previous enemies making their much improved return and taking them out through force but mostly through clever team work. Then the reveal of the big bad, and of the biggest bad. The high cost of victory and the final bitter, and not so sweet, success in not even defeating their final foe.
And while the story is ended, there is a new threat on the horizon of a smarter and doubly powerful enemy, aiming maybe not just for revenge.
If there is anything, and it hardly counts as critique as I have no idea how to make it happen in this story, I would liked to have seen a chapter in between 4 and 5, to give the story some more time to establish the biggest bad and how the normal approaches of none of the still fighting heroes was working. Of course the story as written did that and while it could be expanded upon a bit, stretching it into an entire chapter could not have worked. The usual 'change of venue' to create space between heroes and antagonists for a round two for obvious reasons could not happen. So while I would not have minded to give the biggest bad some more narrative weight, realistically I cannot think of any way that could be done. I guess that once again proves that Morpheus is a far better writer
In conclusion, I have not said it nearly enough but here it is anyway, Thank you for writing this wonderful cinematic series and thank you so very much for sharing it with all of us. It has been a delight form me reading it, and the entire series is on my 'reread many many times' list.