DNA analysis shows that we share common genes with only 70% of the chimp genome, and we are more like the gorillas (peaceful vegetarians) in 15% of our genome. That gives you another 15% that's not particularly shared with the Great Apes.
Then there are the differences not so apparent where "They" have a gene and "We" don't, or we have a different number of copies, or the copies are stored in different places.
DNA tells us everything we need to know about 'the missing link' ~ and the first thing it says to us is that things are more complex than anyone ever imagined.
Time to read up on epigenetics ~ kind of Lysenko-ish and less Mendelian. Trick is through the magic of methylation you can end up with short circuits in your DNA that give you a beak instead of teeth (if you are a bird ~ for example), or maybe turn you into a gay instead of straight! We've known about mammalian "conditioning" for a very long time ~ but now they are able to put a chemical description to it.
Funniest thing, though I know hundreds of Evangelicals and not a one of them is a young earther. That is mostly a non-issue in their lives.
As I understand it, even if that missing link was found, it would do little or nothing to prove evolution since there are numerous missing links besides that particular one...