In my opinion having only one save in this game is a bad thing. I did not reload saves in my first normal playthrough wether I liked the outcome or not. If you cannot control yourself, ok, that's bad. But there are some very bad design ideas at some points of the game, in my opinion, totally unimmersive and artificial, where being able to reload is a good thing. I still wonder how many of the Isobel incident enthusiasts actually played further after failure. In my current Honour mode playthrough I have to accept the one-save feature. I'm not very interested in such ironman stuff, I'm interested in the additional abilities.
Respeccing does not have such a big influence on the gameplay. Before we removed it from Honour mode, several other things had to be done, like removing 90% of scrolls, changing stealth, making shove an action, removing the ability from Haste to give a second cast or removing the vulnerability from wet.
I really thought about not playing the game any further after some events in the second and third act. But not all is black and white, so your conclusion is flawed. You can criticise and nevertheless play a game. But maybe it's the last Larian game I bought. I did it some years ago when the crab was less obvious. Anyway, Shadowheart or my current main Alicia look so good, I probably cannot leave them alone ...
Not all quests are bad, the bad stuff is mainly in the third act. And there are quests with no hints or very misleading hints. Quest markers are bad, but if you don't have them the hints cannot be "it's near the water" and then it's far away from the water. How did you find Ferg Drogher, for example? Or, another example, if you need to find a hidden room, the clue cannot depend on a perception check you can totally fail, so quest over.
