It makes some sense, if Namor was included in Universal's Hulk package. And I think Universal has the rights to all distribution of Hulk movies, like Paramount did all other MCU movies before Disney bought them. Remember all other Phase 1 movies were Paramount except Hulk and Avengers because Avengers was the first Disney.
I think what that terrible (IMO) Hulk and the ok but not great Incredible Hulk did wrong that Avengers did so well is Hulk had a chance to really Hulk out like we want against targets we wouldn't mind him doing so. Speaking for myself, I really wouldn't like to see the Hulk kill or cripple a whole bunch of soldiers, but that's primarily who he was fighting in much of the first two movies. Yes, he later fought other stuff, but he still seemed not to be really free to do it, trying to stop Abomination. In Avengers, he fought Thor, which everybody always likes, it's one of the biggest grudge matches in the comics excepting maybe Hulk vs. Thing, and then he got to beat the shit out of Loki and a bunch of crappy aliens that no one felt bad about him pounding.
Plus, the Hulk looked better in Avengers, they really got the right look, he looked to skinny in TIH and that first one, he looked too much like Shrek, not a good thing.
Also, just like a lot of other characters, he's better to be part of a group and not hang the whole movie on him.
I think what that terrible (IMO) Hulk and the ok but not great Incredible Hulk did wrong that Avengers did so well is Hulk had a chance to really Hulk out like we want against targets we wouldn't mind him doing so. Speaking for myself, I really wouldn't like to see the Hulk kill or cripple a whole bunch of soldiers, but that's primarily who he was fighting in much of the first two movies. Yes, he later fought other stuff, but he still seemed not to be really free to do it, trying to stop Abomination. In Avengers, he fought Thor, which everybody always likes, it's one of the biggest grudge matches in the comics excepting maybe Hulk vs. Thing, and then he got to beat the shit out of Loki and a bunch of crappy aliens that no one felt bad about him pounding.
Plus, the Hulk looked better in Avengers, they really got the right look, he looked to skinny in TIH and that first one, he looked too much like Shrek, not a good thing.
Also, just like a lot of other characters, he's better to be part of a group and not hang the whole movie on him.