When the reigning pope creates new cardinals, it is because he is thinking not only of the Roman Catholic Church of today but, above all, that of tomorrow.
Cardinals are those who, in addition to assisting the pope with governing the universal Church, meet in conclave and elect the successor once the reigning one has died or, as in the case of Pope Ratzinger, resigns.
By the end of August, Pope Francis had created 21 new cardinals (of which 16 are electors, that is, still under 80 years of age). In doing so, he has appointed two-thirds of the voting college of cardinals (should the conclave meet today) from the beginning of his pontificate. Note that the majority required for the election of the pope is just two-thirds. Most of the new cardinals and all those voting seem to belong to the pro-Francis lobby, that is, loyal to the line of the pope and in continuity with his approach.