Good trailer, showed enough to get me hooked, but I was watching this anyway, Hawkeye hasnt had much of a chance to shine in the films so this is good to see and the Xmas tone is a nice idea. Also Hailee Steinfeld is incredibly talented and seems to have a great rapport with with Renner so the "buddy cop" vibes came through strong in the trailer.
Having read the comics this seems to be losely based on it looks like the action and "spy vibe" will be pretty strong. Its not going to reinvent the wheel but as a fun romp and introduction of Kate into the MCU looks like it will be well worth it. The action set pieces will hopefully be top notch as well, I'm liking the look of the car chase, strong "Bourne" vibes from it.
We shall see but all looks good. As trailers go it did the job and mostly positive reaction to it 8/10.