After Aron made his intentions clear regarding the Drakar, the group settled down until a proper plan could be formulated.
The current plan Aron had was based on using Greile's people to help engage the other Drakar, subduing and then assimilating the groups before finally targeting the olden ones.
For this plan to work though, he needed to wait until the male gray scaled Drakar returned from their hunt and see whether or not Greile would still be the leader after the disaster that took place.
If she failed then he had no choice but to reconsider his options all over again. The uncertainty of the situation left him feeling rather uncomfortable but this was to be expected in Limbo.