I'm not sure how to feel about that. Like its cool and something I totally want to experience. So now instead of just a straight line to the goal you can parkour your way around and maybe find some other interesting path. But on the other hand, the level time trials in ME1 was fucking amazing and I played those maps over and over trying to shave the times down.
I suppose they can still have both. Maybe when you get into an interior space the time trial can start, or maybe there will be waypoints where you need to figure out the fastest path between them?
I dunno, I guess its not really something to worry about just because it'll be different.