I remain cautiously optimistic. This could be a CGI abused story light shit show. It could also be a faithful adaptation of the source material with quality CGI and well choreographed action. This 30 second teaser has me leaning in neither direction more than the other.

Were people really expecting them to find a large group of Caucasian actors hanging around in Japan who are completely fluent at Japanese?

That Teaser actually wasn't that bad, Hopefully the Bleach movie looks ok.

it's not that far tbf, you could say Egyptians are Caucasians 

When speaking about anime adaptations, Rurouni Kenshin live adaptation was actually good, not great, but good. And I've seen a few good japanese movies (forgot the name now haha), and many of the recent horror films have their best version in their japanese original forms. 

Live actions are getting better

but still don't like them :/

I had the same thought. Apparently if you choose to write a story with a foreign motif...it can never be adapted in your native country. Who knew?

Though that's ignoring the fact that the actual manga story takes place in a fictional world to begin with, that's only loosely based on Europe, but that's neither here nor there. They better hire a naturally golden-eyed half-Xerxian/half-Amestrian kid for the lead role, or this will apparently be a big fail.

Ah but when I hear the name "Edward" or "Alphonse", in what world would I think that they would be Japanese? It might be fictional, but they don't give fictional names to the main characters.

In Rurouni Kenshin, Himura Kenshin has a japanese name, but red hair. So they give him a japanese actor with red hair, which is fine.

But you hated that. Somehow you're not hating on this.

The names are definitely western-inspired, as that's what Amestris takes inspiration from; but it's still a Japanese story adapted into a Japanese anime with a target audience in Japan. 

Now, whether or not the movie will be good...I have no idea, since I don't really watch live-action anime adaptations...but given who the target audience is, I don't really care if they want to use actors from the source material's origin country, especially given that the characters aren't completely European to begin with.