After finishing the Samhain Horror, seeing Argosyre and the Sacred Pools come full circle (however archetypal it may've been) and delved the depths to Samhain, the Deepsink and all that it entailed, I had been extremely happy with my experience with the game thus far and having heard people's opinions on the first act being the most polished and tight of the sections of the game I was ready to be disappointed.
While I was unable to prove my points regarding balance because for every spell I avoided came another which seemed equally as powerful, I did attempt to the best of my ability to avoid the go-to crutches of lethal blow / deep freeze / instruments etc. and made it out unscathed. I didn't anticipate how strong Summon Undead would ultimately be, nor that the high success rate of paralyze may be due to a bug or sloppy design choice in need of redacting, but in the interest of balance I would say that it appears the game is certainly able to be completed up until 50% with just about any characters that aren't complete invalids if you take the smart approach. My party is far from optimized (Bers / Warrior / Ranger / Thief / Templar / Necro / Sage / Open Slot) but each character has proven fully capable of aiding both in and out of combat to a solid extent (excepting the thief who is seemingly terrible (followed by the not-so-good warrior))
I have been enjoying surfing with Kelpy on the great Lochs and toiling in the Megalith for levers, getting destroyed in the ruins of gideon, and turning on Morgana and wiping out as many pagans as I possibly could. So far act II is so broad and (at least for the moment) impossible for me to parse in scope and design. There are dozens of critical items I have that are collecting dust but appear of great pertinence, and dozens more I've used in the escalation of my quest. While it lacks the linear focus of the first act, admittedly, I'm amazed by how much to do there is now that the world has opened up completely, and how enjoyable a great majority of that stuff has been.
I don't think anyone will get to the bottom of the V1 Balance debate, but I don't think anything is impossible so far or requires known exploits to do. I even wish I had a save ready so I could try Shelach again to see if it can be done not only without known exploits, but without Paralysis or Summon Undead as well, because I'm certain it could be. And in that sense, I'm very happy with the way everything has gone. Rarely is anything frustratingly obtuse like the Museum of Magic's Cosmic Egg puzzle, rarely is the combat down to one-shot vs. one-shot. It may not be elegantly refined or balanced to perfection but I can safely say 53h in that the game exceeds my expectation in just about every way and while I would be the first to point out bugs, broken stats/broken spells (hell, I've seen broken safe-havens) none of it ever made me feel like anything was bullshit, or down to luck or cheesy strategies. You may have to reload a lot here and there, but that's the worst I can say about it.
Looking forward to seeing what the second 50% is like