One of the best is 'The Dark Knight Returns'. It shows an older Batman coming out of retirement and his complex relationship with Superman and Wonder Woman. Their interactions in this story are intense and thought - provoking.
As of now, the DC Comics Trinity isn't being cancelled. Usually, such major decisions are accompanied by clear statements from the comic publishers, and there haven't been any such indications.
It's mainly about a conflict involving DC's Trinity - Superman, Batman, and Wonder Woman. It has a complex plot with different superheroes and villains getting involved in a war that shakes the DC universe.
The main features often include iconic characters like Superman, Batman and Wonder Woman. The art style is usually distinct, with detailed illustrations that bring the DC universe to life. It also likely has engaging storylines that explore the relationships and adventures of the trinity.
300 isn't a DC comic. It has its own independent creation and doesn't fall under the DC Comics universe. The story and characters are distinct from DC's offerings.
Sure. 'Kingdom Come' is a must - read. It presents a future where the Trinity has to deal with a new generation of heroes. Superman, Batman, and Wonder Woman's roles in guiding and sometimes confronting these new heroes are really interesting. The story has a great moral undertone as well.
Vampirella wasn't a DC comic. She has her own independent comic series and background separate from DC's universe. DC has its own array of characters and storylines that don't include Vampirella.