I think the tech update is necessary for the next updates. New Locations, All old locations in widescreen. I hope if the tech update is online, the next updates comes faster. The problem of the tech update is that DC would like change all locations in Widescreens. Additionally the tech update comes with new scenes for old characters.The last update is one month ago so it's a bit early to unfold the "game updates too slow" rant again.
It has and you don't and additionally they provide a "skip to the new content"-new game mode.
I like "Summertime Saga". The main story is okay but i think the side-storys are better than the main story.