Dilan wished that he could advance to Tier-2 before they would encounter the Vampires around the Sanctum but that was pretty unlikely to be the case.
Nonetheless, there were a few things that he could try out until his group finished their preparation for another large-scale battle.
Not everyone would go to the Sanctum of the Old Vampire Lord because the base had to be protected well.
Thus, only around 1000 Ascenders were selected to initiate a large-scale battle.
With the size of their current base, there was approximately one more batch of 1000 Tier-1 combat Ascenders, but they were better off staying at home.
Dilan only wanted strong Ascenders with him, even if he couldn't take all with them.
The Vampire Clans were bound to become powerful and traveling straight to the center of the Shikan plains would take its time.