Hey, glad to hear that you enjoyed the hack! It’s good to see that despite some significant deviations from Thracia, it’s still enjoyable to Thracia fans. The low number of skills (besides Apsis) was definitely intentional, which also gives PCC and move stars more weight. I would put the gameplay being solid largely on the number of devs involved, which allowed people to put more focus into their chapters without experiencing burnout or any one developer’s habits from becoming repetitive.
On the topic of units, it’s always funny to see which of the lords popped off. Usually I’ve seen this be Loewe, but Cleo definitely can be quite strong with her all-arounder build and staff utility.
Also, that’s definitely the most insane Tobie I’ve ever seen. The buffs I mentioned are mostly WEXP related and some minor stat buffs otherwise because most of what I’ve seen indicates that people don’t pick her often. Maybe I shouldn’t have buffed her though… 
Valse is typically not quite that good, particularly in his Def, but he’s definitely a high tier combat unit overall who benefits a lot from being Str focused in a class that gives a large Spd promo.
Sera and Hornet can both definitely “break” the game in their own way; they do have some limitations that hold them back (Sera fatigues every other map if she exploits her skill much, and Hornet in having essentially no enemy phase), but they’re both easily top tier.
I fixed the bugs/issues mentioned here and uploaded those changes to the main patch for future players. The escape one was a fairly quick fix that just came down to something being in the wrong order in the Escape code made for the hack, and there were a couple other Build related issues with mount/dismount classes that I noticed while looking at the class table and fixed. I’ll look at some of the map issues you mentioned while I’m playing through the game again and making various tweaks for the next update.
As for other Thracia-like hacks, Sun God’s Wrath is the only other complete one I know of, which has most of Thracia’s mechanics and a ton of other stuff as well. I’d also like to see more myself, as no matter what flaws it may have, Thracia is an incredibly interesting game (and it seems many hackers agree with this as well, according to this survey’s results).
Lastly, as a more general note: I’ve made unit tweaks and changes through Interlude 2 now, with significant buffs to 8 and 11’s units, along with a couple in Interlude 2. I plan to playtest and modify the first half of the game and then move onto the second half, do the same, and release that as one patch. Also, Cromar has grown even more glorious when there’s fog (credit to knabepicer for making these edits to the Hero anim used in BoB):
