Revelation 20:6 Blessed and holy is he that hath part in the first resurrection: on such the second death hath no power, but they shall be priests of God and of Christ, and shall reign with him a thousand years.
When John saw this vision, would you then conclude he never saw this including anyone who might be saved during the little season, assuming an amil view? But if it did include them, then how do they reign with Christ a thousand years? What's the point of the 1000 years if it can still be applied to someone after the 1000 years? That would be like saying, when the new heavens and a new earth are here, one is still reigning this 1000 years. This 1000 years would be over, would be the point, especially in regards to the little season.
BTW, I fully understand that His reign would be fiorever. Yet there has to be a rhyme and reason for this 1000 years.