As for the implementation of the Frostbite engine, I bet that problems were mostly related to the fact, that Andromeda team was told to switch for this engine when they had their game in development already. It is far easier to plan your work when you know which tools you will precisely need but when you are told to change them on-the-fly, serious trouble may arise. For Anthem franchise, I'm almost certain that the whole "Frostbite" thing was planned from the beginning (and we have no idea if this is not a completely new variant of the engine. And what it will be in a final product).
I actually enjoyed Andromeda pretty much, it's brilliant gameplay mechanics, decent characters (let's not compare them to the OT, they had 3 games, Ryder's squad was just introduced). Even though the soundtrack (crown jewel of previous ME games) was awful, generic and simply boring (which I won't forgive them. Dumping the styles of Hulick and Wall was a crime against youmanatee xD), which made big worlds of Andromeda even emptier. Random bits of cinematic horns, strings and some drums, vastly lacking synth tunes which created some most recognizable pieces of ME music.
All of that (yes, I know that Anthem and Andromeda are developed by different teams. It's still Bioware) made me watch the teaser without emotions. I'm not jumping the hype train absolutely. It's even easier for me that I have a strong aversion for post-apocalyptic worlds and especially all sort of mechs, walkers. Simply not my cup of tea. I'll just wait and see what they came up with.