I love MCU films. They're a lot of fun to watch and the nerd in me always squees with glee when I watch them. I just watched Phase 1 over again with my sister and Iron Man, Captain America, and Avengers are still fun to watch dammit. Did they challenge me in any way? No. But I'll forever remember the first time Iron Man flew or Captain America stage performances. And just... so many from Avengers. The rotating shot of the team, Hulk and Thor's Team attack on the Chautari dragon thing, and Hulk absolutely obliterating Loki. Don't get me wrong, those early movies are rough, but there's a reason I've stuck around for so long and will continue to do so.
Endgame, in particular, is something special. The entire third act is pure fanservice. I already knew going in that Captain America was going to lift the hammer, but that didn't stop me from giggling like a child when he did. And, oh my god, the Portals scene. Captain America standing alone against Thanos' army, everyone and their mothers pouring out of the portals, and, my god, Alan Silvestri's Portals. If I could inject this moment into my veins I would.
Shang Chi is getting a movie! Marvel has FF and X-Men again! Remind me that I'm a consumer and that Disney owns 7 of 8 of 2019's billion-dollar movies as often as you'd like, that won't kill my excitement for the next one.
With all that said, I don't think Endgame is in my top 5 for the year.
Since you are including tv shows, there is the little known show called Star Trek Discovery that reviewed well and ended up getting us like five more spin offs, including Picard next month. Trek is the original master of shared universes.
Meh, Toho and Godzilla did it first.
They've also brought up the greatest achievement in human history, Spiderverse.
Wasn't that technically Sony?