Wyll got actually the most revised. His backstory was changed. I don't know, if they axed Helia for Halsin, but if that would be the case, it is a bad change tbh. Halsin is not only boring, he is creepy as hell. And Helia sounded very interesting and we need small race companions. And yeah, I love halflings. My first playthrough Wasa halfling lore bard.
"We are all stories in the end. Just make it a good one."