Good point. But it still seems, IMO, to suggest that disagreements over the interpretation of biblical prophecy shouldn't necessarily be a cause to doubt anyones salvation or think of them as anything other than brothers and sisters in Christ. (though I'm always of the opinion that each should look to their own salvation and not anyone elses!)
By and large, I’d agree that one’s view of prophecy has no impact on salvation. (I’m sure someone can up with something crazy that we’d both raise our eyebrows at.)
That said, it is significant that the position of the early church was premillennial.
It would certainly indicate to me that that is the place to begin the study.