The Successor to CRISPR May Be Even More World Changing

TIGR-tas a new more advanced technology for more precise gene editing is being explored in the labs.  Potentially might allow for more efficient gene editing with less side effects, due to the increased accuracy.

Reproductive errors

The highest level they found was 1 in 6000 sperm in one man – but any couple could have a child with Apert syndrome. It just comes down to how the genetic dice fall. "Every now and then you are going to have a dad who is unlucky," says Wilkie.-link

Luck, especially one involving such high odds and such bad outcome, shouldn't play a role in the generation of new citizens. Sequencing should occur to ensure only healthy embryos are implanted and go through development.