To be honest, I did not think it was a good trailer at all.
Look, I am a huge MCU fan. Since 2012, I've seen almost every MCU movie in theaters. But this trailer completely underwhelmed me. After watching it, my first thought was "Really, that's it?" The trailer didn't give me any information that the plot summary didn't already give me, and didn't really give me anything to be excited about. I'm pretty confident I won't even see this in theaters.
Well, those are my honest thoughts. What are yours?