One resolution to the lek paradox involves female preferences and how preference alone will not cause a drastic enough directional selection to diminish the genetic variance in fitness.
The genetic variance component is very complex though, with a predicted 500-1000 genetic loci, for example, underlying the genetic variance component of autism.
This obviously increases benefits in regard to distance traveled, but also reduces the amount of genetic variance, increasing the likelihood of inbreeding.
These specific channels have been the target of recent studies dealing with genetic variance and sensitivity to opioid analgesics due to their role in opioid-induced analgesia.