The only problem with Dispensationalism is the idea of the Rapture. There is only ONE Second Coming, not two. Christians will go through the end times and will be on earth when Christ returns. The Pre-trib Rapture is a dangerous myth. Christians will suffer, but will triumph through Christ.
"They overcame him by the blood of the Lamb, by the word of their testimony, and by not loving their lives even unto death."
I respectfully disagree with you about the rapture. I believe in pre-trib. Every pastor and preacher I respect teaches pre-trib, but some good teachers believe as you do. I guess we won't know for sure till it's too late to argue about it.
I believe there will be many non-believers who will become saints DURING the Tribulation, and will pay with their lives to be saved.
The only problem with Dispensationalism is the idea of the Rapture. There is only ONE Second Coming, not two. Christians will go through the end times and will be on earth when Christ returns. The Pre-trib Rapture is a dangerous myth. Christians will suffer, but will triumph through Christ. Dispensationalism does not require a belief in a pre-trib rapture. Most dispensationalists are probably pre-trib in their views but many are post-trib. Your problem is not with dispensationalism, it is with the pre-trib rapture position.