kilicool64

You are pretty severely mistaken about various plot points. There are very good reasons why they occurred. Unfortunately, I can't go into details without massive spoilers. Also, a lot of Root A's events are more important than they seem. There's a ton of subtle foreshadowing in particular.
Root A is fairly different from the rest of the VN, so how much you enjoyed it isn't terribly representative of how much you'll like the remaining parts of the story. They strongly prioritize characterization and world-building over suspense. That said, I would recommend getting all of Root A's heroine scenes before moving on. They have some valuable information and contribute a bit to characterization (though all three characters get much more development later on). The normal ending is also a must-read.