possible Radio drama spoilers ahead:
In the radio drama, Cyrill and Alexis went into the vampire hunting business in part because they had heard a rumor that Richter was contemplating joining forces with Dracula and therefor couldn't be depended on. It'd be up to them to keep everyone safe. Then they met Richter and changed their minds, but were intended on surpassing him. At the end, Richter and Maria contemplated on whether the Belmont clan would indeed be surpassed by hunters such as these one day. No mention that they planned to take a break from the business though.