Putting aside DNA, is it even possible to emulate the whole birth process sythenticly. For example, currently would a surrogate birth mother be required and is this likely to change?
There's just too much knowledge we're missing right now (even the calcium signalling cascade initiated by the sperm fusing with the egg isn't fully understood). Of course, who knows where we'd be in 10, 20, 50 or 100 years?
Currently there is a moratorium of embryos longer than 14 days. That is when tissues start differentiating and embroyos has become implanted in the womb.
The earliest a child has been prematurely born, and survived, is 21 weeks after conception.
We have had embryos survive without a womb in a lab for 14 days (this is currently limited by federal law).
Thus, we really 'only' have a 19 week gap to bridge. Not saying this is not a major challenge, but I believe this is worth of direct research.