I will just comment saying that you are spelling bullshit mostly, like really.
First. We only have the first floor available for now so we don't have acess to ALL weapons or ALL skills because the lack of easy XP to lvl up. I don't even understand why you are commenting on 'why all the equips aren't available in a fricking DEMO'.
Second. You don't have just one save spot, you can have multiple saves so if you do something, buy something, trigger something, etc you didn't want to, you can have a lot of saves as backup so you don't screw yourself, stop being lazy.
Third. You think the game is unbalanced because it's difficult? LMAO! It's unbalanced, yes. But because it's WAY too easy. It's a fricking RPG, you can grind to hell and even bosses get easy to beat, plus all the classes have a really strong build to them, you can literally test it. Once again, lazyness.
Fourth. And the only thing you said that makes any sense. The enemy encounters, i do feel that it should just be one or limit the in-map encounters to special fights/events. Having so much XP available makes the game too easy.
So, the thing is: get out of your lazy-ass high horse and try to make contructive critics instead of crying like a baby because you think it's hard to play a fricking RPG.