I appreciate the ride offered and was entertained by "Arrival" but if this came in any less competent package my rating would be much lower. Instead of relying on explosions as other Hollywood titles of this kind do were instead focusing on an outer space mystery while still not presenting "human characters"* which is something the story asked for (they're all just a backdrop to for our Mary Sue anyways). Tying into this does the world building which was questionable at best along with quite a few stupid people in charge.
*Might also mention the usage of Max Richter's "Nature of Daylight" here; it does not magically conjure emotional connections for your characters on screen and I would even go as far and say that it's not at all suitable as a complementary track (the use in the opening sequence was esp. awful imho).