An agent that’s been around for a long time means an agent with a lot of name recognition. Often, those are the agents that authors feel the most compelled to query since it usually also means more experience in the business. This also could mean less credit given to the “younger” agents since they are new to the industry.
But the “young” agents will one day become the seniors, just as assistant editors one day become senior editors. In this video, Jessica and James go through the benefits of working with someone relatively new to publishing.