This is an awesome game and idea for a game engine, we definitely need more accessible RPG's. I'm sorry I wasn't able to get very far during the stream, but on my subsequent playthrough I built a full party and got into the temple where I promptly got wrecked by a vampire's AOE fireball.
Regarding suggestions, having to activate options with space instead of enter is something I have to get used to - it's messing with my muscle memory a bit. Apart from this, like I suggested during the stream changing the navigation so that you were told which directions arent blocked with sounds, with the arrow keys directly moving you and perhaps adding CTRL or Shift with arrow keys to look around the way you can now would make the game flow a bit faster. I'd also love to be able to get the status of other party members, either in battle or in the party menu IE if I press shift on a character while I'm selecting a target for healing, same goes for the enemies even if it wouldn't give me an exact health value and instead say something more vague like they are slightly injured, mortally wounded and so on.
I really hope you keep working on this engine or at the very least this game, because so far it's looking great!