I'm starting to understand what people say feels "off" about crucible. Destiny's meta game revolves around countering your opponents abilities and gear with your own. The problem right now is that the best way to counter everything is the following strategy:
1) Boost your health/prolong your death as much as possible, whether it's with gear or with a subclass
2) Pick the weapon with the fastest kill time possible. That means ARs and Shotguns
3) Stay in close quarters, which happens to be the majority of the maps
The abundance of chokepoints, line of sight blockers and lack of verticality is doing the game a disservice by artificially dictating the meta game and narrowing the breadth of encounters. As Bungie would say, "there are logical choices". It has passed the point of "a strategy" and has become "the strategy". Popular loadouts are par for the course with class based shooters, but I think a game so inherently unbalanced like Destiny would best shy away from this. It's becoming a rock-paper-scissors shooter where encounters are already decided before they begin.
I'm not sure how to go about solving this issue. Frankly, the PvP was more balanced when you couldn't run into a room with twice as much health, drop from radar or pull out a OHK grenade or melee from your back pocket.