I've enjoyed the Mass Effect Andromeda trial so far, but there are some glaring issues.
It's pretty obvious the voice actors were given next to no direction and/or had no context when it came to their lines. You talk to an NPC and they will blurt out dialogue to you, with every sentence having a different delivery. Combined with some bad timing, it can be pretty poor at some points.
Regarding the writing, some of the (rather clunky) dialogue makes mistakes even I wouldn't do. There's a lot of in-your-face expository dialogue, most of which doesn't remotely feel natural. That said, I'll mostly excuse it, since they're probably trying to get everything quickly set up so you can actually get on with the story (I've seen some videos of later parts and the dialogue improves).
The faces and animations are pretty awful. Not Mass Effect 2 awful (and yes, it was pretty dreadful), but still well below expectations.
However the Mass Effect series has never exactly been without issues. Stiff animation and bad character models have sadly always been a problem with the series.
The overall plot actually looks it may have some good foundations, so it may just need to warm up a bit and move past the introductions. SAM alone looks to have some interesting backstory.
Lets not forget that Mass Effect 1 started off by looking like it had a rather generic Sci-fi plot. Saren looked to be a megalomaniac, who had somehow gained control of a BSG rip-off robot race, presumably so he could dominate the galaxy with leftover prothean tech. Then you got to the Citadel and things started not to add up.