To be fair to XCOM: EU, you can turn the action cam off.
As for new features, I kinda liked the abilities that promotions grant to each soldier to make them unique. Most soldiers in OG ended up being the generic super soldier in the end. The abilities serve to both offer fully realised tactical options as well as make each soldier unique.
Though I have to admit, with the inventory removed completely, I would miss those moments where my soldiers had to toss magazines to each other when some of them ran out. Felt really realistic that way. Doing that reminds me of the Starship Trooper scene where they were defending a doomed outpost and were going "I'm out!" and tossing mags around saying "my last one, make it count!"
That's why I've preordered both anyway.