So, there are a variety of technologies that might be explored. Genetic modification might be limited to removing mutations known to cause serious medical problems. It might be extended to purposefully implanting mutations and alleles with beneficial effects into the children of those who choose to participate. We could look into, at some point, modifying man in more drastic methods to engineer our own form, be it by incorporating the DNA of other species or seeking to find a way to custom engineer ourselves using computers intent on decoding DNA. Should there be restrictions against 'aesthetic changes'? We might look into cybernetics. The could be limited to repairing damaged bodies or extended to improving those who choose to participate (and can afford it, as costs will be prohibitive early on, in all probability). What technologies and medicines should be explored and what limitations should be set in place?