Observation 1: Well, if you want to see Harrison Ford transform into a CGI Red Hulk, this is probably your only option. On the other hand, if you just want to see Mr. Ford as the US President, I recommend Air Force One instead.
Observation 2: If anger makes you into a Red Hulk, why did Bruce Banner turn into Green Hulk? Overcome by envy?
Observation 3: I watched this the night after I watched Mission Impossible: The Final Reckoning. I'll give this movie credit for having a slightly more credible plot.
Observation 4: As it turns out, I really missed some continuity. The major plot driver is the presence of "Celestial Island" in the Indian Ocean made out of the miraculous metal adamantium. Which threatens war between the major powers, the US and … Japan?! It must have landed there in some other Marvel movie I missed. Googling… yeah, probably The Eternals.
Anyway: Sam Wilson, previously the Falcon, is the new Captain America. He's still got his wings, though, aided by Cap's shield. This helps him investigate a nefarious scheme involving President Thaddeus Ross (Mr. Ford), mind control, that adamantium isle, and so on.
Oh, and Liv Tyler shows up. Nice!