To be among the 144,00 anointed ones, you must belong to one of the twelve tribes of Israel (Rev 7:4-8), and be a male virgin (Rev 14:3-4). And the "huge number, impossible for anyone to count, of people from every nation, race, tribe and language, they were standing in front of the throne and the Lamb..." (Rev 7:9) not staying behind without a "heavenly hope".
That is not compatible with the two castes of salvation preached by WTBTS, inc.