SOE bought out Verant, but most of the people didn't change, other than normal attrition. Smed was still in effective charge of EQ development, before and after. All the Verant employees became SOE employees and in most cases did the same jobs. In fact, the bulk of the original SOE employees were shed (unwilling to move) soon after the merger when SOE moved its headquarters from New York to San Diego.
The EQ2 team started before Luclin came out, and the reason Beastlords aren't in EQ2 is because that team decided not to put in the time to include them. Bad decision, maybe, but it's that simple.