I beleive the UAV rules put forward by FAA (in the US, at least), in general, are not well thought out and are sometimes more detrimental than conducive to flight safety. They are more or less an umbrella that attempts to cover way too many different circumstances. Let me emphasize -- I don't think we UAV pilots should not follow them, but I believe we should criticize (voice our opinions about) them whenever possible, in hope of eventually making the rules more sensible.
1. The VLOS rule leaves a lot of room for misinterpretation. Can I take my eyes of the drone to look at my screen to check battery level, or other crucial telemetry data? Can I use a circular quickshot to fly around that lone tree in front of me, as I won't be able to clearly see the drone through the foliage when it's on the other side? What "knowing attitude and orientation" actually means (for instance, when the right stick is pushed in any direction, the orientation of the drone can be easily deduced, even if it is just a speck in the sky. Again, there's telemetry.) And so on.
2. I don't think the VLOS rule is actually enforceable, except in extreme situations. Anyone can claim to be a Hawkeye while in fact they could not see the drone at all, but rely on camera view and telemetry instead (and no one could tell, let alone prove otherwise). Thus, this rule is easily abusable. Personally, I would much prefer if there was a hard distance limit beyond which we are prohibited to fly, and that this limit would depend on, firstly, on the type of airspace, and secondly, on actual pilot's qualifications (which could be judged by FAA, for instance, through a series of tests). I know from experience that a newbie flying his new drone in the park in plain sight could be far more dangerous (to himself, others and any aircraft in the vicinity) than a pro flying BVLOS. But, according to FAA, the newbie is operating within the rule, and the pro isn't.
3. There is not enough distinction between UAV types. Honestly, dividing them into anything below 250 g and anything above that, up to 55 pounds(!) is laughable. I used to pilot a 23 lb. octocopter with 16-inch carbon fiber props. It is a monster that can casually chop off a tree branch one inch in diameter and not even stop in its tracks. Yes, I could see its orientation from at least a mile away, so technically I was not violating the VLOS rule. Did it make me comfortable, or more importantly, should it make anyone else more comfortable? Not the slightest bit. I hated to fly it, because I knew that if something went wrong the damage would be extensive. Now it rests in my closet as memorabilia, and I am not planning to fly it ever again. Even better example is a large single-rotor, or "regular" RC helicopter. These guys are extremely dangerous, much more so then any multirotors. Yet the current law makes no distinction between them and, say, a Mavic Air. All of them weigh more than 250g, same rules apply, and that's it.
I didn't mean to offend anybody by my post, just expressing my point of view. Thanks for understanding.