Saw this movie for a second time yesterday - I like it even more!
Second viewing always gives you a chance to appreciate the cinematography and construction of the movie - there was a lot to like.
Silvestri's score is brilliant (nice for the MCU to actually have a memorable score for once), I added it to my playlist this morning and it really holds up well and can be enjoyed outside of the movie. I wish MCU had bothered to have good scores from the start - that's my biggest gripe with this series (an area where the DECU actually outshines them, specifically Man of Steel and BVS). The use of the score was great and the abrupt silence when Tony gets stabbed by his own blade really emphasized that moment.
I like the meta context of the snap, half the MCU were erased within the movie and at the same time Infinity War basically erased Marvel's Distinguished Competition (the DCEU) from existence / relevance in the real world.