User blog comment:Dman6233/OT Live Action Teen Titans Series to air on DC Digital Service and be produced by Arrowverse writer, Greg Berlanti in 2018/@comment-27627583-20170430120539/@comment-24152851-20170430123203

The reason why AOS and Netflix MCU do that is because they don't have the rights (or the budget) to bring in the big Marvel superhero actors, which is why they're stuck with easter eggs. Though I get what you mean, and it is clever how they add "expanded universe" material without effecting the plot of the main MCU films.

Although with TV shows they can allow direct crossing over of characters, so they probably will take advantage of that.