I don't think that limiting resting is to ask all the player to be hardcore. It's to ask the game to be balanced, as the PnP version played by thousands of non-hardcore ordinary peoples.
If you (Larian) say this is a game based on D&D rules, you must be aware of the D&D balance. Saying "just don't rest so often" is a weak argument because you are not resolving the game flaw, you are just ignoring it. Besides, as I said, you can apply this reasoning to every non-bug-related aspect of the game.
I don't want to speak for you, but I think no-one is willing to pay 60€ for a flawed game and playing it pretending said flaws aren't there.
Balancing in this way is great, in an MMO, where everyone can affect everyone else. But "balance" in this scenario? Not seeing it as an issue, as I said, what George is doing over in Spain has no affect on me here in NA. Speaking of ignoring arguments, what about the argument that in higher difficulties, this feature may not work like it does here, in this one?
"But Rob, it's balanced this way in TT". Of course it is? In TT, there are other people affected by that one player that feels like they have to have a long rest after squashing a few rats. I ask this again, because this is the crux of a "balance" argument: How does whatever George is doing in whatever region adversely affecting you in whatever region you're in? House Rules for MP will cover this adequately, by disallowing it from the start, so that everyone knows it's not going to be a thing, and can base whether they stay in that party or not on that, if it's an issue for them. Hell, we can carry this "balance" argument to the extremes, can't we? Why is there more than one difficulty in games that are fully released? Isn't that "unbalanced", because someone may have an easier time beating an encounter than I did? Which brings me back to my initial argument: The rules are different in different difficulties. Why expect that it would be any different here? So no, I don't see this as a balance thing. I can, and do, completely ignore the fact that you can do it. I also, however, realize that this isn't the final product that's going to "hit the shelves", virtually or otherwise, and don't think it's one of the things they need to spend a lot of time on.
Maybe the simplest "solution" to this "problem" would be to outline the basic rules for each difficulty, with an outline of what each one is. I also think we should have access to monitoring after it goes live, so we can see how many people coming to the forums complaining about it are actually abusing it themselves, in the privacy of their own SP campaign. You know, as a frame of reference for relevance of feedback? Maybe I'm more than a bit skeptical? I mean, I've seen this before. DDO is my best example, where they insisted for years that they needed a higher difficulty because the game was too easy. I was against it, because I knew what would happen. I knew it wouldn't take very long before people insisting they needed this higher difficulty would be calling for nerfs to that difficulty, and it took about 2 weeks for that to come true. I was permanently banned from their forums, initially, for pointing and laughing, and "I told you so".
So yeah, before we start throwing out the bath water, let's be sure the baby's not still in the tub, and that there aren't different rules for this in higher difficulties, which are intended for those that are looking for a challenge.