Yes, the service directories were all moved into /opt because Debian keeps them differently to RHEL. Instead we symlink to them now from the correct place in the relevant release. This gets set up in the environment RPM/DEB.
re httpd - I've put a fix into smesailenv-4.0.0-11 for this. It isn't causing any problems but you are quite correct that it needs to be cleaned up.
Kind Regards
S