I am going to make this statement as direct as possible. The highsec incursion community is not happy with the 1 spawn in highsec. Highsec incursions had 3 spawns at any given time.
CCP, If the nerf or change was intentional:
Such change was not in the patch notes of last expansion and the incursion community does not accept this change.
CCP, If the the change was an error:
Inform us about the error. Then give us an estimated time the error will be fixed.