Par 4: "Unlike some religious people who mistakenly think that they will praise God once they have left the earth and gone to heaven..."
Elitism. We're better than they are. BTW, I've never heard religious people say they don't praise God now. This is just a comment to throw the audience off track.
Par 5: "earthly courtyard". No scriptural reference. The idea isn't even put forth in the Bible.
Par 5: "Although having different hopes..." Eph 4:4. 'nuff said.
Par 7: "By 1919, those approved by Jehovah and serving were clearly identified. They had been spiritually refined in order to make their service to God even more acceptable to him."
Spiritually refined? Still celebrating Christmas and birthdays, had the cross on the cover of the magazine, had many, many incorrect doctrines that were borrowed from the Adventists and Millerites...
Par 8: "The paradise that Paul spoke about would have a physicial, a spiritual and a heavenly fulfillment, all of which will coexist in the future. It can refer to the physical, earthly Paradise yet to come."
Quite an assertion since the Bible doesn't say this at all.
Par 10: "The expression "spiritual paradise" has become part of our theocratic vocabulary."
Yet, not found in the Bible.
Par 13: "We must tell others about Jehovah's organization."
As the OP mentioned, this is exposing their hand. There isn't a scriptural command for this, but if they're going to use Psalm 48:12-14, then "Zion" is Jehovah's organization, and that organization is on earth. Rev 14:1 has the 144,000 standing on Mount Zion, which means that the 144,000 is ON EARTH. How's that for logic?
Par 17: "We often say that they get better every year!"
This statement is in regards to assemblies and conventions. My comment on this is that we would be hard-pressed to even REMEMBER an assembly or convention last year beyond some warm and fuzzy feelings about seeing old friends or other JWs from other countries.
Par 17: "He progressively enhances the beauty of his organization and of the spiritual paradise that we enjoy even now!"
The "He" is Jehovah. Again, they are doing an end-run around Christ, whom God made "head over all things with regard to the congregation." (Eph 1:22)