The problem with trying to establish perfect imbalance:

A) We don't have enough content to do so yet and we're working with placeholders. (Refer to the AR and Heavies)
B) There was never an accurate way to gather information on how to balance game mechanics. (Matchmaking)
C) We still have a large portion of players that still don't understand that this isn't just an FPS and have no grasp on the metagame through damage types resistances, optimal ranges, and most important of all counterplay. (Refer to Tutorials and every QQ thread in existence)

All three of this issues one time or another could have been resolved months ago in beta. More content, especially for heavies since having one suit and one AV/AI weapon forced the heavy class to be scaled down to medium suits and light weapons. Proper matchmaking would have helped collect better data on what game mechanics needed to be properly adjusted. Tutorials would have been an excellent way to give players a better understanding that this game isn't about being the best at everything ant that everything has a cyclic imbalance.

Sadly, CCP had openly stated that the above weren't their top priorities. Hindsight really is 20/20...

I'm referring to the other meaning of metagame that involves the FotM, and cyclic metagaming you see in a lot of PVP based MMORPGs and MOBAs.

I want that Dust 514.
Not this POS of a game we have now.
And no, I don't mean player owned structure.

Game development should be a Dictatorship... not Anarchy. Democracy will work too.. but when is the last time we have voted for anything is Dust 514 ?

That's another issue, the meta game shouldn't be a choice, it should be the only choice. The only reason I'm not completely crap at this game is because I do little things like use flux grenades with kinetic/explosive weapons, engage heavies outside their optimal range with a (rebalanced) TAC AR, lay out proximity mines when I see a large abundance of murder taxis. I came from 5-8 years of EVE, so I knew what I was getting into on day 1.
Imagine if there were an actual tutorial system to explain what was what to players so they knew since day 1. People would probably use more cover while regen tanking instead of trying to play CoD while buffer tanking 24/7 and crying on the forums because they couldn't kill a tank with an AR.

More proof that point B) needs to be addressed:
Link

They're just getting around to doing this recently with the TAC AR. Instead of bringing down the nerf Mjolnir like most of us expected, they tweaked the weapon to make it a longer range option for an already too versatile weapon class without it overpowering the other 3 variants like it did before. I still use the TAC AR, and find it more fun to use because it's not an "I win button" it once was and the other variants are still viable.

But I wish they would have learned to do the same with the laser, HMG, and MD. Instead they completely neutered those weapons, bringing Dust 514 into another step closer to CoD with a shade of futuristic chrome.

Everything in uprising suffered from big sweeping changes and trying to fix elements that weren't broken to begin with. I hope that they learned from this mistake in the future. Judging by the imbundance of dev threads today, they have.