I would LOVE to hear more on this front. Miss Palpatine has a very interesting family history in her own right and actually exploring that instead of junking it could make for some fascinating stories.
Engineers build their own protosabers (early form of lightsaber). (Ok, technically they're high-current tungsten/titanium heating elements that just happen to glow brightly and cut/burn through things)
Some people like Ahsoka. Also this kinda got hinted at in SW9. Ahsoka was alive at the end of Clone Wars, and we just haven't seen her since. Except that 9 hinted that she was dead by showing what was probably a Force ghost of her.