With Aeon's skills being focused more on support type, he felt that it would be quite wasteful not to nurture some subordinates.
Aeon not only had the goal of taking revenge on the Royal Family but he also planned to revive the Thundershade Family.
To start a family, one needs to have sufficient strength and some powerful but trusted subordinates to protect the family in his absence.
Once he became powerful, getting powerful subordinates was not an issue; however, the problem would be their loyalty to him and their attachment to his family.
On the other hand, nurturing some good seedlings from the beginning, would not only make them loyal to him, but their attachment to the Thundershade Family would also increase by the time they become powerful.
'I think I should start nurturing some good seedlings after ascending to the Second Floor.'