Yes, the rules already imply that during the 8 hours of long rest, each out of the 4 characters take a 2 hours long watch. But standing guard should not necessarily remove a chance of attack, it should just give a forewarning and (if lucky) enough time to get ready. The forewarning for preparation is extremely important as donning medium and heavy armor takes 5 and 10 minutes respectively, so just is not feasible in...
You can tell that the people who like the current light system do not play D&D 5 And I can tell you don't know what you're talking about. Don't presume and belittle other people's experience only because you have different opinions. As for action economy, I cast light on my weapons out of combat, and there was not a single encounter in Solasta where I would have had to recast it.
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