well as one that prefers a tank build, I can say this much, I would love to have potions to use in combat. Sadly thou, most monsters I come across I have to be x5 times higher in hp or abilities and range just owns. You can go against 45 hp mobs with basicly rank 1 (first ones made) archers and drop the mob. Try doing that with melee, the mob hits you once and u die, so the only way to play is a range game sadly. I was definitly hoping for more melee combat. it basicly nulifies the whole reason to buy armor, swords etc. I think in the end they know this and will fix it, but to op topic, I agree that it would be nice and I actually expected it to work that way, but as Cree pointed out, balance can be then even worse.
Eh in the end it is beta and we really have no idea what their "overall" idea was for combat in the final. Once the final game is out I definitly will put more details thoughts about such things.