I dont understand the logic of extending bus services to HOP when Forest Hill is a MUCH busier station so therefore I assume more commuters live in and around Forest Hill Station than Honor oak park.
I speak as someone who commutes daily on the trains and see how many people both embark and leave the trains at these stations.
Regarding someones comment about the P12 and P4 running from HOP
to the best of my knowledge Neither of these services actually go into central London.
The P4 runs to Brixton and the P12 is pretty useless and goes to Surrey Quays via Peckham.
I say pretty useless because a short walk along Peckham Rye and you can get numerous busses that go through Peckham.
The P12 seems more of a shuttle service not a real route