Originally Posted by Maximuuus
I recently created such a mod like that for testing purpose.
https://www.nexusmods.com/baldursgate3/mods/501

You have these choices :
- Supply 40 (base game *1) + food is no longer considered as supplies (supply bag required)
- Supply 80 (base game *2) + food is considered as supplies
- Supply 80 (base game *2) + food is not considered as supplies (supply bag required)
- Supply 120 (base game *3) + food is considered as supplies
- Supply 120 (base game *3) + food is not considered as supplies (supply bag required)

400 supplies per long rest seems a bit too much though, especially at the beginning.
Of course if I try to limit my long rests a bit, I'm not hardcore to the point of resting only 4 times.

I really hope that the resting system, especially the supply mechanic will be tweaked.

Once you get used to using free resources like cantrips or shooting an arrow from a light crossbow you don't even notice the lack of long rests.
I tend to take my first long rest some time after I hit level 4, sometimes as late as level 5 depending on how lucky I've been with initiative.

I like your only camp supplies idea but I would still increase it to at least 80 or 120 for hardcore difficulty as they are readily available.