Global options are set in individual links

It looks not logic to me that the module set below values in the individual link options, set in httprl_request():

    'domain_connections' => 8,
    'global_connections' => 128,
    'global_timeout' => 120.0,

I think this should be options of httprl_send_request(). This way we can save memory as there is no need to waste array size in the individual link options. Aside there is an $options parameter in httprl_send_request() that is not documented. Should we use this for the global settings?