The fact that a decent sized planet can take a good hour or so to mine properly anyhow means that you're wrong Jings. Not to mention just how rare Element Zero can be when doing it...
Needless to say, I never understood why the general agreement about the Mako levels was one of hate, personally I liked the Mako levels ok, so it was irritating in it's inability to shoot anything closer than 10 meters and inaccurate as hell in doing so at longer ranges however I primarily used it merely to get from point a to point b, if I needed to fight something enroute, I'd use the mako to get myself to a great vantage point and utilize my sniper rifle of mass destruction (gotta love maxing the sniper rifle with change of ammo shot for different enemies once they were confirmed as a certain type) to take out pretty much everything and anything (I even took a geth armature out in 2 or 3 shots with the sniper rifle I finished the game with) and I quite liked the simplistic way you scan deposits of minerals.
Though I do feel the hacking and new lock bypass styles are brilliantly done since the bypassing game of matching the nodes feels right, hacking is well executed as well however I dislike the fact that I can't hack with brute force if I fail to bypass the system with omni-gel is a sorely missed feature.