1) Please, please in future updates add a difficulty mode that limits long rests.
Currently it is way to easy to just take a long rest whenever you want. Maybe make it so that food is more rare, so that you can't spam long rest whenever you want. It would make your decisions during battle much more important.
2) And while we are already here: i like the respec concept alot. It is great, but maybe for a hero-difficulty level with above mentioned limited rest number it would be great to also forbid respecs.
3) And on top of that maybe only one autosave every 1h of gameplay, so that you can't just reload before each skill roll to get your 20.
Of course you could do it all by limiting yourself, but it would feel much more like an achievement if there would be an official difficulty class added.