Look I live in New Zealand and woke up to discover the babysitter episode on halo way point.
And my only problem was the architecture! they hinted that "the ruins predate humans and covenant" yet they look like some cross between myan temples and japanese palaces. Only one corridor looked even remotely like it was forerunner. This seems to be a massive change in style.
If anyone wants to correct me please do as I really thought the previous minimalist forerunner tech look from the games was perfect as it was. I think that the old ensemble mmo art had followed the style much better.

this is my first post so go easy on me.