Anakin's Lightsaber
I'm sure this has been discussed, but I havent heard anything about it, even through the search. So this may seem very obvious.
After Anakin has turned to the darkside, I think Palpatine should have provided him with a red lightsaber. So, I'm not entirely sure why he still used the blue lightsaber. Its the first time a darkside jedi uses a blue one. I guess Anakin was just starting out with the darkside, but I thought it would have been cool if Palpy gave him one. Or does a jedi or sith have to construct his own?
It then could have been the same one his uses in OT, right until Luke chops his hand or robotic hand off. I'm not sure why Lucas didn;t want Anakin to have a red one right away