Agree to disagree about reaction abilities that offer damage reduction. But with respect to the second question, not really. That's basically one of those types of questions that comes up wrt race features and wildshape. There's nothing mechanically different between an elf's immunity to sleep, dwarven poison resistance, and darkvision, but of those darkvision is the only one that doesn't carry over to your wildshape by RAW. If you start trying to split hairs over this, it becomes difficult very quickly.