The R25 dungeon pretty much requires you fight everything.
The R45 is just a bit different. You can fight everything to be safe, or you can run through. Running through isn't a foolproof strategy either, realise.
SE shouldn't be punished for trying to offer something different. You aren't bypassing content by running through. Instead, you are fleeing for your life! As per the devs intended. After all, even the preview dungeon video showed them running through the place, so obviously that was the strategy they intend you to use.
But you cant just run through to the end because there are several choke points where you have to organise your PT to disable the imperial devices.
There is no reason you should hate on SE for trying to mix up the strategy of the dungeon. As I said, it's a matter of pacing. There are some places where you must stand and fight, and others where you must simply run and disable the imperial devices.