OK. Now that I've posted a book's worth of suggestions about making some changes that I think would be awesome, I've decided to suggest something new.
Forget all these suggestions about improving the gameplay and just get to adding Acts 2 and 3, new races, new classes, crafting, etc. and fix some more of the bugs.
Honestly, the game is a blast. I've played 300+ hours of it now and plan on still playing more. Even if you don't fix anything else in the game as far as how the game is played, I'm still going to play the heck out of it. So let's get to the new stuff. Let's get to Act 2 already and more races like Half-Orc and Dragonborn and maybe Yuan-ti and such. Let's have a Sorcerer class and Paladin and Barbarian.
What's changed my mind? People. I get pushback on just about every suggestion. Can't make everyone happy. So I say play the game however you want to play it. You want to follow 5e rules more closely, then don't eat a cheese wheel as a Bonus Action to heal HP. Be your own DM and set your own rules for yourself that are more in line with how you play D&D 5e. Don't think throwing barrels around at enemies is unbelievable? Don't throw barrels around at enemies. You think it's wrong to allow Astarion to use Dash as a bonus action and then Dash again as an Action and then Dash again as a second Bonus Action, don't use that extra Dash.
Play with people who feel the same as you in these things.
The point: Let's get to the good stuff and stop spinning our wheels around with all this other stuff. Sure, I'd live to see Day/Night cycle implemented in some way. Sure, I'd love an Auto-Search feature or a Search Area Button so that I don't have to open every container and search every pixel of the screen. I'd love better inventory management. I'd like actual weights for items and more realistic weight limits like Strength times 5 = Carrying Capacity before you get a -10 to movement. But honestly, none of that is really important. I'm itching for more game.
MORE MORE MORE!!!!