Is there no mechanism which purges old options from the DB? I tried a few plugins in the past and I found out that there are a few pretty long option strings which are set to autoload but IMHO not used at all - as I'm not using those plugins anymore.
So I guess it makes sense to remove those options completely - but I'm not 100% sure whether I miss some implications? Am I mistaken, or this the unfortunate result of bad plugins which really needs individual optimization every now and than?
EDIT: Some theoreticaly reference to autoloaded orphaned options: Is deleting orphaned wp_options entries safe?