1. You should watch Rebels. For much of the first season Kanan is in hiding, this means he tries to use his lightsaber sparingly and keeps it disassembled on his belt.
2. Obviously, when you look at things realistically you can understand the inconsistencies in ANH with later and past movies as simply due to the world not being fully fleshed out yet. However, within the universe we have to account for these things and come up with explanation. Thus, a lightsaber to locals or patrons of a bar doesn't raise much suspicion, just another strange melee weapon. And, everyone wears robes in Star Wars, especially on Tatooine, so Obi-Wan doesn't draw much suspicion with his clothes and brief weapon use. He couldn't possibly be saying, "fuck, hiding," because the very next scene he's trying to be discreet and telling Han about his need for secrecy while keeping his head low. The last thing he wants to do is draw suspicion onto himself so the Empire can track them.
3. I don't care for a Han Solo movie either but I believe that's exactly what future anthology films would be, expansions of the universe that don't tie into the mainline films in any major way. I'm fine with that, I don't need everything to tie towards the Skywalkers, I simply don't want to see young Han Solo.
