The Marimo Pirates/Recruitment

From the beginning of the series, Dhahaka D. Knave has shown no real preference as to how many people become loyal members of his crew, as his dream is something that he can accomplish with any number of people, or just alone. Rather, Knave's goal seems to be 'acquiring as many friends as possible', and because of this he isn't picky how many members his crew has, even expressing general interest in having his own fleet one day, reasoning that something like that would make it difficult for him to not change the world in some way or form.

While the crew initially expanded at a rapid rate, it's recruitment has slowed down to almost a snail's pace; with the last member joining almost immediately after the timeskip in the form of Froth. Discounting alliances such as the Trifecta, it seems unlikely that the crew will recruit many more members, if any at all, by the end of Grand Voyage.