I don't know if my opinion here is what you're looking for, since Jehovah's Witness doctrine regarding "heaven" is radically different from most other Religion's standpoints on heaven. But, whatevs. shrug
JW's believe that access to Heaven is, regardless of your faith or loyalty to Jehovah, limited to a select few. Specifically, out of Jehovah's faithful humans, 144,000 of them will be chosen to help Jesus Christ govern the Earth, while the rest of us remain here to live forever.
What I always found odd about that, is that you aren't "chosen" to become anointed by members of the congregation. Rather, it's believed that if you are anointed, Jehovah will send you a... message or vision, stating that you've been chosen. If you tell the congregation that you've received a message from Jehovah saying that you are of the chosen, they'll believe you. That process seems ripe for abusement, buuuut, I guess the people in charge realize that too because they're not allowed to treat someone who is anointed any differently from someone who is not.
Aside from that... the JW "heaven" that's more akin to the main stream version of heaven is on Earth, as I said above. When Armageddon happens, Jehovah will destroy the world as it is now, sparing only the faithful, and will then recreate it, turning it into a paradise, and, making people essentially immortal. They don't age, don't get sick, even dangerous animals won't hurt people. Aside from being faithful at the time that Armageddon occurs, if you die before Armageddon happens, you will be resurrected, and live in Paradise. This is because death is the ultimate repayment for sin, that's why Jesus sacrificed himself for us. So it doesn't really matter who you are or what you did, if you died before Armageddon you will be resurrected, if you die during it you will not. The people who are destroyed during Armageddon don't go to "hell" though. JW's believe that your "soul" is tied to your body, and if your body is destroyed, your soul ceases to be. So if you die you are simply dead; there is no conciseness afterlife, no torture.